MeSign

MeSign

Encrypted email client

4 ratings
5 reviews
Free

Details

  • Released
  • Updated
  • August 28, 2018
  • November 27, 2025

Features

MeSign screenshot #1 for iPhone
MeSign screenshot #2 for iPhone
MeSign screenshot #3 for iPhone
MeSign screenshot #4 for iPhone
MeSign screenshot #5 for iPhone
MeSign screenshot #6 for iPhone
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About

This email client automatically encrypts and digitally signs your outgoing messages using S/MIME certificates. It offers automated key management and exchange, ensuring secure and private communication without requiring new email accounts.

Automated S/MIME encryption
Digital signature and timestamp
Easy cloud key management
Automatic key exchange
Email attachment security scan
Spam identification
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What's New in MeSign

1.5.0

November 27, 2025

Fixed: * Other bug fixed Have feedback? Please click the "Feedback" button in the APP, thanks.

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User reviews

Stick with Canary Mail

Only supports S/MIME, so GPG/PGP is currently not an option.

Response from developer

Hi there, thank you for taking your time and sharing your experience with MeSign app. We are always looking for ways to improve and have taken your feedback further into review. With regards to Read Receipt, this function is available in Settings -> Account -> enable "Read Receipt". Hope this helps. Best, MeSign

No PGP

Got an email from the customer relations team shortly after downloading the app; they were asking what I thought of the app. I told them I need something that can do PGP; their response was basically saying why PGP is bad instead of actually considering why a user would want it. 0/10, would not use over Canary Mail.
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Response from developer

Hi there, Thank you for taking your time and sharing your experience. We have taken your feedback to the further review. MeSign works hard to provide the best email encryption products and solutions for our customers and is always looking for ways to improve. Sincerely, MeSign

Feels secured!

Very easy to use with a feeling of serious security. The level of security is likely much higher than what I expected. Amazing product, haven't seen any negatives yet.

Amazing software!

Before meeting MeSince I never believe S/MIME encryption can be used in such an easy way. This software just lower the barrier for people to encrypt their messages in the highest security standard.

Very helpful app

MeSince is very helpful for me, very easy to use and my email can be encrypted for free. Brilliant!

FAQ

How does MeSign protect my email privacy?

MeSign provides end-to-end encryption for your emails, storing them in ciphertext on your email server. It uses automated S/MIME encryption to ensure that only the intended recipient can read your messages.

Do I need to create a new email account for MeSign?

No, MeSign allows you to log in with your existing email account. It automatically installs a free email certificate, enabling you to send encrypted and signed emails without changing your current email address.

How does MeSign handle digital signatures and timestamps?

MeSign automatically digitally signs and timestamps all outgoing emails. This ensures the authenticity of the sender and the original sent time, preventing forgery and identifying potential fraud.

What are the benefits of MeSign's cloud key management service?

The cloud key management service allows for automatic installation of your encrypting certificate on new devices and free renewal of expired certificates. This simplifies key management and ensures continuous secure communication.

Is MeSign compatible with other email clients?

Yes, MeSign uses the S/MIME standard for email encryption, making it compatible with other S/MIME-supported email clients like Outlook, Thunderbird, and Apple Mail. Encrypted emails can be decrypted across these platforms.

Does MeSign scan email attachments and links?

Yes, MeSign performs a full security scan on email attachments and hyperlinks. It also identifies spam in all incoming emails, adding an extra layer of security to your communication.

What is the update frequency for MeSign?

The latest version of MeSign is 1.5.0, last updated on November 27, 2025. While specific update frequency isn't detailed, this indicates active development and maintenance.

What devices does MeSign support?

MeSign is available for iPhone and iPod devices, as indicated by its supported devices list. It is designed for iOS users seeking enhanced email security.