# MeSign — Encrypted email client > Encrypted email client with automated S/MIME encryption and digital signatures. (iPhone/iPad app by MeSign Technology Limited.) - Source: https://appshunter.io/ios/app/mesign/id1306592028 (this page in markdown: same URL + `.md`) - Developer: [MeSign Technology Limited](https://appshunter.io/developer/1306592027) - Category: Productivity - Price: Free - Rating: 1.00/5 from 4 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 59 MB - Languages: American English, French (France), Hindi, Italian, Japanese, Korean, Polish, European Portuguese, Russian, Chinese (Simplified, China) and 4 more - Released: 2018-08-28 - Data updated: 2026-08-22 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/mesign/id1306592028/reviews.md ## What is MeSign? MeSign App is an encrypted email client that is free and easy-to-use. No need to register a new email account. Just download MeSign app and log in to your existing email account. In a few moments, your free email certificate will be automatically installed, and you can start sending encrypted and digitally signed emails as easily as regular cleartext emails. Your emails will be stored in ciphertext on your email server only. Your email privacy will be end-to-end encryption protected. Here are some cool features you will love: - Automated S/MIME encryption Real privacy of communication requires encryption of emails in transit and at rest. It is normally a hustle to apply, install and configure email certificates into your email client. We have achieved a completely automated S/MIME encryption without changing your email address. MeSign app automatically installs and configures S/MIME certificates issued by MeSign CA in a few minutes after logging in. Then, all your outgoing emails will be encrypted to ensure protection and confidentiality. - Automated email digital signature and timestamp The sender’s identity as well as the time of sending can be forged and manipulated. With MeSign app all emails are digitally signed and timestamped to ensure authenticity, original sent time and identify a fraud. - Easy key management The free cloud key management service enables you to automatically install your encrypting certificate whenever you install MeSign App from a new device to log in to your email. The expired email certificate will also be automatically renewed for free. - Automatic key exchange The free cloud public key exchange service enables you to send encrypted email to anyone without manually exchanging public keys in advance. - Full security scan MeSign app performs email attachments and hyperlinks security scanning and Spam identification of all incoming emails. - Email encryption is compatibility with Outlook, Thunderbird, iMail etc. MeSign use S/MIME standard for email encryption, compatible with other S/MIME supported email clients like Outlook, Thunderbird and Apple Mail, and can decrypt the encrypted email with each other. Download MeSign app now and discover these and more features. Let us protect our privacy and communicate securely. ## Key features - Automated S/MIME encryption - Digital signature and timestamp - Easy cloud key management - Automatic key exchange - Email attachment security scan - Spam identification ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/mesign/id1306592028/reviews.md ### 1/5 — Stick with Canary Mail *2021-05-19, version 1.3.1* Only supports S/MIME, so GPG/PGP is currently not an option. ### 1/5 — No PGP *2021-04-16, version 1.3.0* 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. ### 5/5 — Feels secured! *2021-04-15, version 1.3.0* 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. ### 5/5 — Amazing software! *2019-10-19, version 1.1.5* 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. ### 5/5 — Very helpful app *2019-10-09, version 1.1.5* MeSince is very helpful for me, very easy to use and my email can be encrypted for free. Brilliant! ## Frequently asked questions about MeSign ### 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. ## Version history (last 5 releases) ### 1.5.0 — 2025-11-27 Fixed: * Other bug fixed Have feedback? Please click the "Feedback" button in the APP, thanks. ### 1.3.3 — 2023-12-25 Fixed: * Other bug fixes Have feedback? Please click the "Feedback" button in the App, thanks. ### 1.3.2 — 2021-05-19 New and improved: * Remove the permission to read the phone device ID * Optimize the storage read and write access permissions * Optimize the start page Fixed: * Other bug fixes Have feedback? Please click the "Feedback" button in the App, thanks. ### 1.3.1 — 2021-05-12 New and improved: * Optimize the compatibility of MeSign Enterprise Key Management System Fixed: * Fix the attachment display BUG * Other bugs fixed Need feedback? Please click the "Feedback" button in the App, thank you! ### 1.3.0 — 2021-02-02 New and improved: * Optimize the process of installing the certificate, more quickly now * The email certificate cannot be exported * Optimize the display of SM2 email certificate, display the Chinese Law Compliance * Update multi-language translation Fixed: * Fixed the SM2 certificate request process * Other bug fixed Have feedback? Please click the ""Feedback"" button in the APP, thanks. ## Apps similar to MeSign | App | Rating | Price | Category | | --- | --- | --- | --- | | [Nextech EDGE User Conference](https://appshunter.io/ios/app/nextech-edge-user-conference/id1667966680) | 4.8 (38) | Free | Productivity | | [Escriba Assessoria Contábil](https://appshunter.io/ios/app/escriba-assessoria-contabil/id1669320500) | — | Free | Productivity | | [Genius Ai Keyboard](https://appshunter.io/ios/app/genius-ai-keyboard/id1667135880) | 4.7 (6) | Free | Productivity | | [Classic Kia Carrollton Connect](https://appshunter.io/ios/app/classic-kia-carrollton-connect/id6443960540) | — | Free | Productivity | | [Queens Bouquet Network](https://appshunter.io/ios/app/queens-bouquet-network/id6443573780) | — | Free | Productivity | | [PRO SOUND INFO](https://appshunter.io/ios/app/pro-sound-info/id1669709860) | — | Free | Productivity | ## Related topics [mesign](https://appshunter.io/ios/topics/mesign) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*