10 Best Email Encryption Software for 2023

Dejan Cvetnarevic Image
Dejan Cvetnarevic

Updated: February 07,2023

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Data loss and sensitive information leaks are some of the biggest problems internet users face. That’s why it’s essential to do everything you can to make your digital correspondence as secure as possible.

The most effective way is to use one of the best email encryption software services available. A good solution can scramble the contents of your message so that potential interceptors are unable to read it.

But with so many choices, finding the right one can be challenging.  

As such, we singled out our top ten picks.

Let’s check them out.

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Best for: Overall
ProtonMail logo

1. ProtonMail

  • Most secure option
  • Free plan
  • Automatically encrypts
Visit Website Full review
Best for: Free plan features
SecureMyEmail logo

2. SecureMyEmail

  • Amazing features
  • Easy to use
  • No new address
Visit Website Full review
Best for: One-click solution for businesses
Trustifi logo

3. Trustifi

  • Suitable for businesses
  • Intuitive
  • Rich security features
Visit Website Full review
Best for: Gmail
Virtru logo

4. Virtru

  • Improves Gmail security
  • Easy-to-use plugin
  • Encrypts all data
Visit Website Full review
Best for: One-way communication

5. Symantec

  • Ideal for customer emailing
  • Extra security
  • PDF encryption
Visit Website Full review
Best for: Transferring large files

6. Egress

  • Customizable encryption
  • Moves large files securely
  • Intuitive
Visit Website Full review
Best for: Zero-knowledge policy
Tutanota logo

7. Tutanota

  • Trustworthy
  • Available on all devices
  • Open source code
Visit Website Full review
Best for: Large businesses
Zix logo

8. Zix

  • Extra protection
  • Additional filtering options
  • Automatic encryption
Visit Website Full review
Best for: Ease of use
PreVeil logo

9. PreVeil

  • Automatically connects accounts
  • Helps recipient decrypt
  • Hides complexity
Visit Website Full review
Best for: Custom applications
Sendinc logo

10. Sendinc

  • All recipients
  • Follows data safeguarding rules
  • Nice-looking dashboard
Visit Website Full review

Best for: Overall

1. ProtonMail

Most secure option

Free plan

Automatically encrypts

In 2013, former CERN scientists founded this Switzerland-based electronic mail service. They focus on providing client-side encrypted email and data protection. All the while ensuring that it complies with the country’s strict privacy laws.

Initially, it was an invitation-only service, but it opened to the public in 2016. By 2020, it reached 50 million global users and made a name as one of the best encryption tools around.

A unique aspect of ProtonMail is its hardware security. The company’s servers are locked down in a Swiss bunker. Protection that cloud storage can’t match.

All messages between ProtonMail users are automatically encrypted. This separates this service from other popular options like Gmail, Yahoo, and Outlook.

Besides offering encrypted email exchange between its users, ProtonMail provides fully protected messages for users with accounts on other services. It does this through Pretty Good Privacy (PGP), which requires everyone you want to communicate with to also run this program.

It uses public-key cryptography and symmetric encryption protocols to ensure end-to-end encryption. When you register, you get your public and private RSA keys.

The zero-access architecture ProtonMail employs - ensures no one can access your messages. Keep in mind that you can’t retrieve your data if you lose your password.

You can set email expiration times for your outgoing messages. Think of it like how Snapchat removes messages after an allotted time.

If you find the domain protonmail.com uninviting, you can substitute it with a pm.me one. While all users can receive such an address, only premium users can reply to them.

ProtonMail is web-based, meaning that it doesn’t have its own PC client. However, you can download the encrypted email app for Android and iOS.

Despite being a web app, it has several themes you can choose from. You can also customize the inbox, composer, and icon sizes.

The best part - there is a free plan. However, this version has limitations in terms of storage, email addresses, and the number of outgoing messages per day. This tier includes up to 500MB of storage space.

To unlock the best of its email encryption services,  you must subscribe to one of the three paid plans. ProtonMail Plus is available at $5/month and is the most affordable deal. You can customize each plan by adding extra features and increasing your storage.

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Best for: Free plan features

2. SecureMyEmail

Amazing features

Easy to use

No new address

SecureMyEmail is all about encrypting your electronic post, regardless of what service. It works with Google, Yahoo, Microsoft, iCloud, and others. 

It’s one of the three primary products offered by Witopia. In 2003, this company established its headquarters in Virginia and currently provides data security services in almost 200 countries.

With SecureMyEmail, there’s no need to set up a new email account. Instead, you can quickly sync it with the one you already use. The only qualifier is that it must support IMAP, though this is common with most services.

SecureMyEmail uses PGP to support its email encryption service. This requires you to enter a passphrase that is distinct from your password.

While with some services, it can be difficult to send email to non-users, SecureMyEmail simplifies the process. Doing most of the work, it creates keys for each specific conversation and uses them to hide the actual content.

It’s advantageous to keep a circle of secure contacts you often message. SecureMyEmail lets you do this through its address book function.

SecureMyEmail is intuitive and has its own apps for Windows, Android, macOS, and iOS devices. When you set it up, all you have to do is connect it with your email address. 

You will find its dashboard quite similar to other web-based email services. You will find everything from your inbox to spam on its left side. And there’s a big button for writing new messages.

In settings, you can make numerous changes, including the duration of the message expiration.  There are even additional options that provide more security. These, though, require more tech adjustments. 

It’s also important to mention that SecureMyEmail is still improving. So, it shouldn’t surprise you to come across “coming soon” messages.

Like most other email encryption programs, SecureMyEmail has a free version with limited features. It also offers several pricing plans for premium users starting at $3.99/month. If you don’t want a monthly plan, you can grab the lifetime offer for $99.99.

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Best for: One-click solution for businesses

3. Trustifi

Suitable for businesses


Rich security features

Some businesses simply can’t afford to spend much time protecting their electronic correspondence. If this is you, Trustifi is an excellent solution.

Rather than bombarding you with options, this service subtly encrypts every email you and your employees send or receive. And It does this with just one click.

This means there’s no portal and logins before sending or opening an email. Similarly, there are no usernames needed to access your account.

And while Trustifi only comes with a few of the extra features you’d expect from your secure email encryption tool - its quality of service meets the grade. 

Trustifiy’s idea is to offer security and convenience in one package. You can just set Trustifi up and trust (pardon the pun) it to protect your messages.

It’s a superb tool for tracking your email with proof of delivery. In other words, the software notifies you when the recipient receives, opens, and reads your email.

Trustifi also ensures no threats enter your company’s system via email. It scans every incoming message for malware, ransomware, and phishing schemes.

Now that you already know that the service is simple to use - let’s see how it works.

As a simple plug-in for Gmail and Outlook, no matter how your business operates, there’s no need to change any infrastructure to encrypt your email.

Similarly, setting Trustifi up for everyone within your organization is extremely easy. It takes just five minutes to get this email encryption program to work.

Once operational, it's simple to teach your team the one-click concept and ensure it encrypts all their messages.

If you want to check out this tool, you can request a demo. You will need a representative’s assistance to purchase a plan. And by providing some details about your company, they’ll help tailor a custom plan for your business.

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Best for: Gmail

4. Virtru

Improves Gmail security

Easy-to-use plugin

Encrypts all data

Virtru does a fantastic job of managing security and data retention for large companies. It also specializes in providing encrypted email services to Gmail users.

And while quite a few encryption apps work with at least a few email services, Virtru only supports Gmail with its Chrome extension. This isn’t necessarily a bad thing. After all, the pool of people using Google is quite large.

Although it’s a Gmail-only encryptor, Virtru ensures that users on any email system receive your encrypted messages and replies securely.

While Google says it doesn’t read its users’ email, this isn’t as clear as it may seem. For example, it will release content to governments and their entities if requested. To prevent such, you can simply turn to Virtru.

This plugin ensures that absolutely everything, even auto-saved drafts, is encrypted. And while Google can still see who you’re communicating with, it has no idea what you’re saying.

To add this Gmail encryption extension to your security arsenal, you don’t even have to visit the company's site. Instead, find it in the Chrome Web Store and install it in seconds.

Virtru is extremely easy to use. While similar tools employ multi-factor authentication, this plugin has none. And when you think about it, this makes a lot of sense. If somebody manages to access your Gmail account, you will already have more significant issues.

Besides not having to remember any passwords, you also don’t need to exchange any public keys or special passwords. This is helpful for users looking for a solution that does all the work.

In fact, there’s no real need to look at Virtru’s dashboard if you don’t want to. Your email remains fully encrypted.

However, this Gmail encryption plugin has a Chrome icon that takes you to its dashboard. There, you will find all of Virtru’s features. 

One option provides a list of all the encrypted email sent. It also allows you to change security settings and even revoke access.

Unlike Virtru’s data protection tools, its Gmail encryptor is entirely free. To start safeguarding the content of your email, simply add the extension to your Chrome browser.

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Best for: One-way communication

5. Symantec

Ideal for customer emailing

Extra security

PDF encryption

This Norton software product protects email communication by using encryption software. Symantec offers two services: encryption and email security.

Its email encrypting software supports many popular services such as Gmail, Outlook, and Yahoo. In addition to encryption, Symantec provides protection from viruses, spam, and other attacks.

You can use this software as a desktop email encryption tool. Its centralized management console is simple to use and easy to install. It verifies all messages according to set policies. And it automatically encrypts all messages coming or going from your device.

Symantec doesn’t have to deploy email encryption on-site. Instead, you send your messages through its web gateway, where the platform encrypts all email. With no app involved in the process, Norton passes on cost savings to its clients.

This software also protects messages you send or receive on your mobile device. Symantec offers email encryption for Android and iOS. With a simple login, you can begin sending and receiving messages securely.

PDF email protection can come in handy if you often do one-way communications. This is one of Symantec’s best features. It sends email as encrypted PDF attachments where recipients can only access them with a password.

Large businesses often view this as the best way to send encrypted messages to their clients. This is because the receiver doesn’t have to use email encryption software to access the content safely.

You can ask for a quote on the company’s website and create a custom plan.

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Best for: Transferring large files

6. Egress

Customizable encryption

Moves large files securely


Egress started operating in 2007, and over time, it earned its place as one of the best email encryption software based in the UK.

This service aims to provide businesses with encrypted email capabilities that lack any hassle for their customers. To achieve maximum convenience, Egress introduced a different message decryption process. 

With most software, the recipient must employ multi-layered authentication. This is good for security but can be both challenging and time-consuming. 

Egress tackles this by offering flexible authentication. You can apply a unique, one-time URL that lets trusted recipients see the email content without decryption. This avoids pushbacks while keeping your messages secure.

When risks are more significant, you can also introduce a password for recipients to gain access.

If you don’t wish to take any of these routes, Egress still requires receivers to access your email through a secure portal. To gain entry, they must first set up a free Egress account.

Some free secure email providers let you move large files, but none do it as efficiently as Egress. It transfers large files securely and bypasses frustrating SMTP limits. As such, you can share gigabytes of data via encrypted email using its simple drag-and-drop function.

Egress also has a mobile version that keeps your data safe. You can even access your protected email using its facial recognition tech on your device. There is nothing better than skipping daunting verification processes.

The app’s easy-to-use interface looks just like your standard email composer. 

You can activate the service with an Egress Protect account, available for $112.50/year. This deal coverage is for a single user. You can also develop a custom plan for your growing business needs. 

There’s also a free trial version that lets you send up to 25 secure messages to non-Egress users.

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Best for: Zero-knowledge policy

7. Tutanota


Available on all devices

Open source code

While it may not get all the attention it deserves, Tutanota is another big player in the world of secure email. This Germany-based company started operating in 2011 and has since acquired millions of users.

What separates it from most other encrypted email providers is that it has no outside investors or owners. The same team that built the service is in charge of all operations.

Tutanota uses a hybrid encryption system that overcomes some common issues found with PGP. The service ensures that all data protection adheres to GDPR and other EU privacy regulations. 

Unlike when using PGP, Tutanota also encrypts your message subject lines. This is advantageous for users wanting their entire correspondence hidden.

With your data securely stored on servers in Hannover, Germany - you benefit from some of the best internet security laws in the world.

But this isn’t all you get with Tutanota. This secure email service includes many exciting features.

One of these is its anonymous signup process. You never have to divulge personal information during the signup process.

Everything about the service is adjustable, which is excellent for businesses. There are many options to play with, from custom domains to white-label designs for your mailbox.

Tutanota also has an unusual email search function. With Gmail and similar services, you can easily find old messages. The problem is that you shouldn’t be able to do this in a proper zero-knowledge system. That’s why Tutanota cleverly approaches this by creating a local encrypted index that facilitates search.

And what swept us off our feet is how all of its versions synchronize so easily. There’s the browser application, along with Windows, macOS, iOS, and Android apps. They are all ad-free and intuitive. The encrypted calendar also syncs between your devices.

All versions are a mirror image of its web app, making this secure email encryption service extremely easy to use across multiple devices.

When you register on the Tutanota website, you can choose between the free plan and paid subscriptions, which start at €1.20/month (approximately $1.32/month). The former doesn’t include all features, but it’s more than enough for everyday use. You can also customize the deal according to your needs.

Tutanota’s privacy and security features perform amazingly well. It’s one of the few options that offer a genuine zero-knowledge email service. If protecting your email is your primary goal, go for it.

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Best for: Large businesses

8. Zix

Extra protection

Additional filtering options

Automatic encryption

Zix Corporation is a US-based security technology company that offers a range of products. Among them is its email encryption tool.

This app is all about protecting your email while taking away any hassle. It offers efficiency and convenience to both individuals and large companies.

One of its most distinctive features is the policy filter. It can automatically hide message data or attachments. It can also quarantine an email, allowing you to check whether it violates company policy before releasing it for delivery.

This can benefit large businesses looking to hide information from prying eyes. Zix takes away all the worry and ensures all data is secure, regardless of whether the employee is sending email from the office or their home.

To effectively keep the latest threats at bay, ZixCorp employs analysts and experts who combat the newest risks. The company subsequently introduces all solutions as patches.

While most secure email solutions don't filter out sensitive information, Zix can easily accomplish this. This is especially important for large companies looking to prevent cybercrime.

Zix’s process of creating and activating passwords includes a signature phrase. It’s a case-sensitive password with up to 128 characters. It can contain spaces and any other characters too. Zix then splits this phrase into two files - one private, which stays in your computer, and one public for the company’s servers.

The service works as a plugin and appears in your browser as a red Z button - it’s impossible to miss. When wanting to encrypt an email, just tap on it and enter your signature phrase.

Upon receiving an encrypted email, non-Zix-users must obtain their own Zix credentials to finalize the email's receipt. 

Since ZixEncrypt targets businesses, its price changes per user count. Companies with 10-24 users will have to pay $76.50/year for it.

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Best for: Ease of use

9. PreVeil

Automatically connects accounts

Helps recipient decrypt

Hides complexity

PreVeil works with Gmail, Outlook, and Apple Mail. It automatically connects with your Gmail or Outlook account and gives you a chance to send free and secure email.

Once up and running, a new set of mailboxes for your encrypted messages appear among your other options. PreVeil safely stores all these messages on its servers.

When you send an email, its content automatically encrypts on your device. The only person who can decrypt it is the recipient. And if an attacker compromises the message, they’ll find nothing but gibberish in it.

PreVeil only supports encryption between its users. If a recipient doesn't yet have an account, this email encryption program will send an email with instructions on setting it up. Once completed, the encrypted message shows up in their inbox.

With the Chrome extension active and your Gmail account open, the program identifies which users can receive encrypted email. PreVeil accomplishes this by marking such user names with an orange stripe. However, these visual cues aren’t available with Outlook and Apple Mail.

The PreVeil app is available in Google Play Store and Apple App Store. It lets you do everything you can on the desktop app, but when on the go, its biometric authentication ensures intended recipients can receive and read messages.

Even if you don’t want to install the app on your device, you can always send an encrypted message from PreVeil’s web app using your private key.

Connecting PreVeil to your existing email account is relatively easy and is completed during installation.

With a PreVeil account, you receive a cryptographic key stored on your computer or mobile device. And all other components have their respective keys. For example, a file in a shared folder meant for other users will have distinct keys.

You can easily encrypt your messages with it without ever needing a new address.

If you’re an everyday user, PrevVeil offers a free email encryption plan that will likely meet your expectations. However, if you’re a business owner, you’ll probably want a subscription for three or more users, which starts at $20/user/month.

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Best for: Custom applications

10. Sendinc

All recipients

Follows data safeguarding rules

Nice-looking dashboard

Sendinc has been around since 2008 but never really challenged Gmail, Outlook, or other popular email services. However, it emerged as an excellent choice for those looking to encrypt their messages for free.

This software doesn’t act like an app. Instead, it’s an Outlook add-on that introduces security features the popular email service lacks. When you use it to encrypt messages, you don’t even have to leave the program.

Sendinc doesn’t store encryption keys. So, unlike with some other market options, sending your key to the recipient is up to you. Only after they receive it can they decrypt and read the message content.  

Fortunately, recipients don’t need this software too. As long as they have the key, they can access the message without a third-party app.

The encryption Sendinc offers makes it one of the most secure email services around. 

Its security standards comply with and even exceed the FTC GLBA Safeguards Rule recommendations. This makes it an excellent choice for businesses that want to remain compliant.

To send email securely to other email users, recipients must have Sendinc email addresses. These email addresses consist of the user's email address, followed by @sendinc.com

This service is also helpful because it quickly and easily integrates into your web and software applications. It includes the SMTP API and REST API to allow for customization. 

If you decide to employ Sendinc, you’ll be able to choose between several plan options. This includes sending encrypted email for free. This plan includes 100MB message storage and 20 recipients per day.

The Pro deal starts at $48/year for users with additional needs. And for businesses looking to secure all their employees’ email, there is a Corporate plan with volume discounts.

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What Is Email Encryption Software?

If you’re online, chances are you’ve already come across this term. But what exactly is email encryption?

Put simply, this technology uses cryptography to temporarily change the email data format to being unintelligible and thus safeguarding its privacy. It’s one of the underlying techs that power VPNs, password managers, and similar tools.

Hackers looking to access your sensitive information will have a tedious task when your email is encrypted.

That’s why email encryption software is so popular these days. You never have to worry about cybercriminals compromising any information you send or receive with such a service.

And how do you encrypt an email?

The entire process takes very little manual work, especially if you opt for a premium service. Typically, you set up the app or browser extension and follow a few simple steps when sending a message.

Do I Have to Change My Email Address?

You don’t have to change your email address with some email encryptors. They work as an add-on for popular platforms such as Gmail, Outlook, and Yahoo.

With these services, all you have to do is select several options, and you’ll be ready to send a secure email from your current email address.

However, some options don’t function this way and require email addresses to have their domain when providing end-to-end email encryption. You can, though, still send fully-encrypted email to users on other platforms.

ProtonMail is a leading platform that requires you to create a new email address. However, with the popularity of this service rising, this shouldn’t put you off.

How To Send Secure Email in Outlook?

Outlook encryption features for sharing personal and confidential information ensure your email never leaves Microsoft 365. While not initially available, this webmail provider introduced them as internet security became paramount.

You must first upgrade your Microsoft 365 account to send email encryption in Outlook. Family and personal subscriptions now include this option.

Encrypting your message in Outlook isn’t tricky. After composing your email and filling out the recipient’s email address, click on Options, then Encrypt and select Message.

You can choose between the following Outlook email encryption options:

  • Encrypt - Your message stays encrypted, and other Microsoft 365 users can download unencrypted attachments. Other users need to use a temporary passcode.
  • Encrypt and prevent forwarding - Recipients can not copy or forward your encrypted message. Word, Excel, or PowerPoint files remain encrypted even after downloading.

If you’ve done everything right, you should see a small note informing you that the message is now encrypted.

For some Outlook users, a third-party software solution is preferable for email encryption. Specifically designed software like SecureMyEmail, Egress, and Sendinc are all compatible with safeguarding your Outlook email.

How To Choose the Right One for You

With so many encryption tools available, identifying the best one isn’t always easy. And for all you know, you could be using a service for years without knowing a better fit exists.

As such, let’s dig into what to review when choosing the best email encryption service:


It's important to consider where the email service is registered and how the company handles data residency.

For example, countries belonging to the fourteen eyes surveillance alliance share intelligence. This can be anything from browser history to email messages.

And while its primary purpose is to prevent war, it’s understood that email sent from a provider based in one of these countries are open to government inspection.

Security Features

It’s critical for email encryption software to offer maximum protection. In addition to encrypting messages, users come to expect protection from all sorts of other threats.

Phishing, eavesdropping, ransomware, keyloggers, viruses, and spyware are just some of the threats you want to avoid. 

Ease of Use

In the age of convenience, users expect cybersecurity solutions to be intuitive. Regardless of your tech-savviness, you should be able to protect your messages from cybercrime.

While most secure email vendors try to simplify their software, not all succeed. Users often consider browser extensions the most effective means for sending encrypted email. 

Services with their own apps and web-based dashboards are good alternatives but usually require additional effort.


Not all encryptors pair with every email service. Some specialize in sending secure email with Gmail only, and some work with any service, while some require you to open a brand new email account.

As such, consider what email service you already use and whether or not you wish to open a new account. Your personal and professional circumstances will help you to decide.


The number of users who only send and receive email from their computers continues to decrease. Almost everyone nowadays uses a mobile device to do such. 

Therefore, if you want to encrypt all of your messages, you need a solution that offers Android or iPhone email encryption.

The good news is that most top-tier tools have mobile versions too. And even for those that don’t have an Android or iOS app, they often work on mobile through your browser.

Still, it’s important to check out the service’s mobile availability before purchasing a plan.


Many top-tier encryptors offer free plans as a part of their service. This includes ProtonMail and SecureMyEmail.

If looking for basic functions for a single address, these plans might fit the bill. 

However, if needing more advanced protection, picking up a premium plan is a good idea.

This is especially the case for businesses looking to encrypt all incoming and outgoing email. Many subscriptions cover numerous users, ensuring all employees’ e-correspondences remain safe. This way, you can worry less about any possible company data breaches.

It’s also essential to pick a service with a scalable plan, as the needs of your business may increase. Many popular solutions even let you create a custom plan.

Wrap Up

There are tons of solutions, and identifying the best email encryption service isn't easy. ProtonMail is trending, and many users are currently migrating to it.

However, there are many solutions that work better depending on various circumstances. For that reason, it’s essential to reflect on your needs in relation to the software options. 

Once you make your choice and begin exploiting the software, you’ll be able to send and receive email securely.


What is the best encryption for email?

ProtonMail works like a charm when it comes to encrypting your email. It automatically secures information shared between its users. Additionally, you can encrypt messages you send to friends with accounts on other email platforms.

How can I encrypt an email for free?

Many of the top-tier email encryption services let you send free encrypted email. This includes ProtonMail and SecureMyEmail, among others. You can always switch to a premium plan if you require special features or more users.

Which software is best for encryption?

If you want a web-based free email encryption tool, look no further than ProtonMail. However, if you want one with a desktop app, consider opening a Tutanota account.

Should I encrypt my email?

Encrypting your email is a great way to secure your correspondence. If sharing sensitive information, it’s always a good idea to exploit the best email encryption software available.


Dejan Cvetnarevic

Dejan Cvetnarevic

Dejan is a techie at heart who always dreamed of turning his fascination with gaming into a career. He finds working for TechJury a perfect opportunity to express his views of all kinds of different software. Being an avid reader, particularly of fantasy and sci-fi, Dejan pursued a degree in English Language and Literature. When not at his computer, he’s watching sports or playing tabletop games.

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