Alternatives to Sfletter for all platforms with any license

Tutanota

Tutanota is a free and open source web-mail client that focuses on privacy and security. It has open source iOS and an Android apps. The Android app is published on...

Free Personal $ $ $ Open Source Web Android iPhone iPad F-Droid
Encrypted Email Privacy focused Apps with End-to-End Encryption Anonymity ... Clean design Custom domain Encrypted Email Encrypted Connection Encryption Integrated File Sharing Multiple Account support Privacy Protected Web-Based Add a feature

246 Like
mailbox.org

mailbox.org offers a secure e-mail account for home and business use. The domain name, me@mailbox.org, is easy to remember and can be understood anywhere in the world....

Commercial $ $ $ Web
Built-in Calendar Encrypted Email Privacy focused Ad-free ... Encrypted Email Gpg encryption PGP Encryption Self destructing messages Supports XMPP Two factor authentication Add a feature

26 Like
Shazzlemail

ShazzleMail is the first privacy-protective and surveillance-resistant secure email service.

Free Personal Mac Windows Linux Android iPhone
Self destructing messages Add a feature

3 Like
SCRYPTmail

SCRYPTmail is true end-to-end encrypted email service. Email and meta data, i.e sender / recipient are encrypted when you communicate within scryptmail domain. ...

Freemium Web
Anonymity Encrypted Email Apps with End-to-End Encryption Web-Based Add a feature

9 Like
Runbox

(Official description) Runbox provides secure email communication with Perfect Forward Secrecy SSL connections, Extended Validation, and options for...

Commercial $ $ $ Web OpenPGP
Support for IMAP CardDAV Encrypted Email Two factor authentication Add a feature

3 Like
EveryCloud

EveryCloud’s cloud based spam filtering service blocks 99.99% of spam, viruses and even newsletters if required. Set spam reports to give users control and view 90 days...

Commercial Web
Email Archiving Add a feature

3 Like
Walnut Secure Email

Walnut Secure Email is P2P, person to person or end to end secure mail application that protects all of end-user existing accounts, including Gmail, Yahoo Mail...

Commercial Windows Linux Android iPhone Blackberry ... Android Tablet iPad
Encrypted Email Add a feature

1 Like
Lockbin

Lockbin is a web application for sending private email messages and files. People use it to send things like credit card numbers or confidential information.

Freemium Mac Windows Linux Android Android Tablet
Encrypted Email Add a feature

4 Like
Encipher.it

Encrypting email with Encipher.it is a simple way to protect your sensitive data. You can encrypt emails or text messages and only the recipient can decrypt it with...

Free Open Source Windows Linux Web Chrome
Google Chrome Extensions Encrypted Email Encryption Gmail integration ... Outlook integration Add a feature

1 Like
Sendinc

Secure email made simple Sendinc enables anyone to send and receive military-grade encrypted email in minutes and requires no special technical expertise. There is...

Commercial Web
Encrypted Email Self destructing messages Add a feature

1 Like
Pictle

Pictle is a simple, beautiful way to send secret images. After the image is viewed, it will be deleted. .

Free Web
Secure File Sharing Self destructing messages Add a feature

0 Like
oneshar.es

Sending confidential information such as passwords, account information and other sensitive data in emails and IM is not necessarily safe. That data is typically stored...
- Discontinued The official website is no longer accessible and the iPhone app has been removed from the App Store.
Free Web Windows Mobile Android iPhone HP webOS ... Firefox OS
Encryption Self destructing messages Add a feature

0 Like