
Description: SendLater is an email productivity extension for Gmail, G Suite, and Office 365 that allows users to schedule emails to be sent at a later time. It helps manage email overload by removing the pressure to respond immediately.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mailbutler is an email management app for Mac that helps organize, schedule, and track emails. It has features like snoozing emails, send later, reminders, templates, analytics, link tracking, and read receipts.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API