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Download Proton Mail: Encrypted Email 4.5.1 APK
Target: Android 14 (API 34)
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What's new in Proton Mail: Encrypted Email 4.5.1
- Introduced the "Post subscription" flow
- Introduced "double tap to select text" support in Composer
- General performance improvements across the application: faster navigation, smoother scrolling, and a ~20% reduction in app size
- Fixed an issue where the Mailbox list would display empty rows under certain conditions
- Fixed an issue where "Open in Proton Calendar" would not open the Calendar app under certain conditions
- Fixed an issue where some attachments could not be opened
About Proton Mail: Encrypted Email 4.5.1
Keep your conversations private. Proton Mail is encrypted email from Switzerland. Used by millions worldwide, our all-new email app protects your communications and has everything you need to easily manage your inbox.
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The Wall Street Journal says:
“Proton Mail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient.”
With the all-new Proton Mail app, you can:
• Create a @proton.me or @protonmail.com email address
• Send and receive encrypted emails and attachments with ease
• Switch between multiple Proton Mail accounts
• Keep your inbox tidy and clean with folders, labels and simple swipe-gestures
• Receive new email notifications
• Send Password-protected Emails to anyone
• Enjoy your inbox in dark mode
Why use Proton Mail?
• Proton Mail is free — We believe everyone deserves privacy. Upgrade to a paid plan to get more done and support our mission.
• Easy to use — Our all-new app has been redesigned to make it easier to read, organize, and write your emails.
• Your inbox is yours — We don’t spy on your communications to show you targeted ads. Your inbox, your rules.
• Rigorous encryption — Your inbox is secured on all your devices. No one can read your emails but you. Proton is privacy, guaranteed by end-to-end and zero-access encryption.
• Unmatched protection — We offer strong phishing, spam, and spying/tracking protection.
Industry Leading Security Features
Messages are stored on Proton Mail servers using end-to-end encryption at all times and are transmitted securely between Proton servers and user devices. This largely eliminates the risk of message interception.
Zero Access to Your Email Content
Proton Mail's zero access architecture means that your data is encrypted in a way that makes it inaccessible to us. Data is encrypted on the client side using an encryption key that Proton does not have access to. This means we don't have the technical ability to decrypt your messages.
Open-Source Cryptography
Proton Mail's open-source software has been thoroughly vetted by security experts from around the world to ensure the highest levels of protection. Proton Mail only uses secure implementations of AES, RSA, along with OpenPGP, while all of the cryptographic libraries used are open source. By using open-source libraries, Proton Mail can guarantee that the encryption algorithms used do not have clandestinely built-in back doors.
Proton Mail in the press:
“Proton Mail is an email system which uses end-to-end encryption, making it impossible for outside parties to monitor.” Forbes
“A new email service being developed by a group from MIT that met at CERN promises to bring secure, encrypted email to the masses and keep sensitive information away from prying eyes.” Huffington Post
Follow Proton on social media for all the latest news and offers:
Facebook: /proton
Twitter: @protonprivacy
Reddit: /protonmail
Instagram: /protonprivacy
For more information, visit: proton.me/mail
Our open-source code base: github.com/ProtonMail
Proton Mail: Encrypted Email 4.5.1 variants
This release may come in several variants. Consult our handy FAQ to see which download is right for you.
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Uploaded:July 1, 2025 at 1:48PM UTC
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Version:4.12.1(11641) for Android 9.0+ (Pie, API 28)
Uploaded:June 21, 2025 at 8:29AM UTC
File size:89.53 MB
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Version:4.11.0(11554) for Android 9.0+ (Pie, API 28)
Uploaded:May 26, 2025 at 10:23PM UTC
File size:84.44 MB
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File size:84.40 MB
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Uploaded:May 5, 2025 at 9:48PM UTC
File size:84.39 MB
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Version:4.9.1(11362) for Android 9.0+ (Pie, API 28)
Uploaded:April 13, 2025 at 8:26PM UTC
File size:83.57 MB
Downloads:423
Version:4.9.0(11321) for Android 9.0+ (Pie, API 28)
Uploaded:March 31, 2025 at 2:50PM UTC
File size:83.56 MB
Downloads:239
Version:7.10.3
Uploaded:July 15, 2026 at 7:53AM UTC
File size:134.31 MB
Downloads:491
Version:7.10.4
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Uploaded:July 15, 2026 at 1:37AM UTC
File size:134.45 MB
Downloads:10
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File size:136.87 MB
Downloads:825
Version:7.9.9
Uploaded:May 29, 2026 at 4:15PM UTC
File size:133.72 MB
Downloads:479
Version:7.9.8
Uploaded:May 29, 2026 at 4:15PM UTC
File size:133.53 MB
Downloads:17
Version:7.9.4
Uploaded:April 15, 2026 at 5:35PM UTC
File size:133.22 MB
Downloads:1,049
Version:7.9.3
Uploaded:April 13, 2026 at 11:43PM UTC
File size:131.53 MB
Downloads:100
Version:7.9.1
Uploaded:April 8, 2026 at 3:02AM UTC
File size:131.40 MB
Downloads:274
Version:7.8.1
Uploaded:April 8, 2026 at 3:02AM UTC
File size:127.11 MB
Downloads:30
