Apps with 'SMTP' feature

Geary is an email application built around conversations, for the GNOME 3 desktop.

Email, calendars, and contacts to highest standards of security, privacy and reliability.

Mailfence is a free secure and private mail service, that provides an end-to-end encrypted email.

Scalable email delivery for transactional email

hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.

Easily manage your marketing automation, email and SMS marketing campaigns, and transactional messaging all in one simple and powerful platform.

Mailgun is email automation for developers. Use our REST APIs to effortlessly send, receive and track email from your website or application.

MailHog is an email testing tool inspired by MailCatcher, but easier to install.- Configure your application to use MailHog for SMTP delivery

Becky! Internet Mail is an email client for Windows OS. Becky! Internet Mail supports POP3, IMAP and S/MIME as well as https://alternativeto.

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 HTML 4.

All in one email delivery platform that includes an SMTP Relay, API, and a full suite of tools via the browser based UI. .

Mailjet is an email service provider that works with brands like Microsoft, Etsy, Product Hunt, Toast to help create, send, and optimize marketing and transactional emails.

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader :).

In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further delivery.