
Description: MailCtlr is an open-source email client for Windows that focuses on speed, stability, and ease of use. It supports POP3, IMAP, and SMTP protocols and includes features like message threading, quick search, customizable themes, and add-ons.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Sendy is an email marketing software built for marketers to send newsletters, automated emails and build email lists. It's self-hosted, affordable and easy to set up for small businesses to manage email campaigns.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API