Alternatives to NaSMail for all platforms with any license

Gmail

Gmail is a free search-based web-mail service. It offers a full featured web-based email client with search capabilities, a mailbox with Pop and IMAP access, SPAM...

Free Personal Web Android iPhone Chrome OS Android Tablet ... iPad Android Wear Android TV
IFTTT integration Support for IMAP Integrated Chat Integrated Search ... Integrated Spam Protection Multiple Account support Organize mails Outlook integration Suggested replies Threaded Conversations Unified inbox Yahoo Integration Add a feature

2914 Like
Roundcube

Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client...

Free Open Source Self-Hosted PHP Cloudron
Hostable PGP Encryption Add a feature

138 Like
Apple Mail

There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite.

Free Mac iPhone iPad
CalDAV CardDAV Bundled with macOS Add a feature

210 Like
Zoho Mail

Zoho Mail is a webmail service built with the needs of a modern business in mind. It provides features for business users to communicate effectively while catering to...

Freemium Web Android iPhone
Custom domain Ad-free Integrated Spam Protection Mail filtering ... POP3 Support Privacy focused SMTP integration Two factor authentication Add a feature

78 Like
Polymail

The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.

Commercial $ $ $ Mac iPhone iPad
Sync Contacts Email scheduling Email tracking Multiple Account support Add a feature

20 Like
Squirrelmail

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure...

Free Open Source Self-Hosted PHP
On-premises software Add a feature

23 Like
Webmail Lite

Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail...

Free Open Source Web Self-Hosted
No features added Add a feature

15 Like
Teknik Mail

We provide these services to help those who try to innovate. In order to register a new account, you will need to input a valid invite code during registration. This...

Free Open Source Web
Support for IMAP POP3 Support Add a feature

2 Like
Agenda Mahala

Agenda Mahala is a great website to Learn English. On Agenda Mahala we have great English Courses, and both Level 1 and Level 2 are completely free. You also get an...

Free Web
No features added Add a feature

4 Like
Inboxer

Unofficial, free and open-source Google Inbox Desktop App. Built using electron, Inboxer includes a menu bar which is globalmenu compatible and works, and keyboard...

Free Open Source Mac Windows Linux
No features added Add a feature

1 Like
Atmail Email Server

Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Features: Webmail Calendar Addressbook ...

Commercial Linux Web
File-sync Group Mail Add a feature

7 Like
Simple Mail

Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox. Usage: Configure one or...

Free Mac Windows Linux Firefox
No features added Add a feature

5 Like
InboxCube

For us Email is our lives. At the heart of our inbox lives a personal network of information and content that privately defines who we are. We believe that something...

Free iPhone
POP3 Support Add a feature

3 Like
GyazMail

GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.

Commercial Mac
POP3 Support Add a feature

3 Like
nvlope

Simple and minimal email with custom domain and own API.

Commercial Mac Windows Linux
No features added Add a feature

4 Like
- Discontinued Website down, twitter deleted.