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
Integrated Chat IFTTT integration Support for IMAP Integrated Search ... Integrated Spam Protection Mail filtering Multiple Account support Organize mails Outlook integration Suggested replies Threaded Conversations Unified inbox Web-Based Yahoo Integration Add a feature

2974 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 Encrypted email Bundled with macOS ... Rich text editing UI customization Add a feature

218 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

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

82 Like
OpenProject

OpenProject is an open-source project management software with a wide set of features and plugins. It supports project timelines / Gantt charts, issue tracking, wiki...

Freemium $ $ $ Open Source Web Self-Hosted Ruby Cloudron
Kanban boards Computer-aided machining (CAM) Cost Calculator Cost estimate ... Gantt-charts Splitting costs Add a feature

58 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

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

16 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
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

3 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

5 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...
- Discontinued Project archived. See https://github.com/denysdovhan/inboxer/issues/101
Free Open Source Mac Windows Linux
No features added Add a feature

2 Like
Turing Email

Turing Email is an email client that you can use with your existing email accounts that is packed with innovative features packaged into a beautiful design. Turing is...

Commercial Mac Windows Web Android iPhone ... Android Tablet iPad
Email scheduling Email tracking Salesforce integration Add a feature

3 Like
ETHletter

Email service, combined with the Ethereum blockchain. Allows you to set up the price for incoming emails, so the senders will need to pay to you before they disturb you...

Free Web MetaMask
Based on Blockchain Add a feature

4 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