Alternatives to GhostMail for all platforms with any license

ProtonMail

Secure email with absolutely no compromises, brought to you by MIT and CERN scientists. Swiss Based ProtonMail is incorporated in Switzerland and our servers are...

Freemium $ $ $ Web Android iPhone iPad
Apps with End-to-End Encryption Privacy focused Encrypted email Custom domain ... Anonymous email PGP Encryption 4096 Bit encryption Anonymity Encrypted Connection Mobile friendly Multiple languages Support for Multiple Users Self destructing messages Add a feature

383 Like
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
Encrypted email Apps with End-to-End Encryption Privacy focused Anonymity ... Clean design Custom domain Encrypted Connection Integrated File Sharing Multiple Account support Web-Based Add a feature

224 Like
GnuPG

GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key...

Free Open Source Mac Linux PortableApps.com Xfce OpenPGP
Encrypted email Add a feature

107 Like
Enigmail

Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey.

Free Open Source Mac Windows Linux GnuPG Thunderbird ... SeaMonkey
No features added Add a feature

66 Like
Mailvelope

Mailvelope is a browser extension that allows to exchange encrypted emails following the OpenPGP encryption standard. Mailvelope integrates directly into the Webmail...

Free Open Source Mac Windows Linux Chrome OS Chrome ... Firefox
Google Chrome Extensions Firefox Extensions Add a feature

29 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 ... Gpg encryption PGP Encryption Self destructing messages Supports XMPP Two factor authentication Add a feature

21 Like
GPG Suite

GPG for Mail is an open source plugin for Apple Mail. Encrypt, decrypt, sign and verify mails using OpenPGP with a few simple...

Commercial $ $ $ Open Source Mac GnuPG
No features added Add a feature

8 Like
APG

Android Privacy Guard (APG) is a free and open source application for Android devices, created by Thialfihar, that lets you encrypt and decrypt single files or emails.

Free Open Source Android Android Tablet OpenPGP
No features added Add a feature

9 Like
GPGMail

GPGMail is a PGP plugin for Apple Mail. It brings the functionality to sign, verify, encrypt and decrypt mails using the...

Commercial $ $ $ Mac GPGTools
No features added Add a feature

10 Like
Secure Gmail

An extension to send secure, encrypted messages through Gmail. SecureGmail encrypts and decrypts emails you send in Gmail. This happens all on your machine, and the...

Free Open Source Mac Windows Linux Chrome Gmail
Google Chrome Extensions Add a feature

7 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
OneTime

OneTime is an open source encryption program that uses the one-time pad algorithm to allow two parties to communicate privately. It has features to assist with the...

Free Open Source Mac Windows Linux
Command line interface Add a feature

1 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 Two factor authentication Add a feature

3 Like
WebPG

WebPG is a free, open source suite of tools to bring OpenPGP (GnuPG/PGP, gpg, gnupg) to the browser, in an effort to make...

Free Open Source Mac Windows Linux Chrome Thunderbird ... SeaMonkey Chromium Firefox OpenPGP
Google Chrome Extensions Firefox Extensions Add a feature

1 Like
AnonymousSpeech

Professional anonymity provider for secure anonymous email. Anonymous Domain and Hosting Offshore, Anonymous Surfing, SSL, Time Delayed, Bulk Email and many more...

Freemium Web
Surf Anonymously Add a feature

3 Like