Airmail vs Mailspring

Airmail is an email client for macOS, iOS, and watchOS designed for power users who manage multiple email accounts. It supports Gmail, iCloud, Exchange, IMAP, and other providers with features like custom actions, snooze, send later, and integration with third-party productivity apps. The app uses a subscription model for premium features.

Mailspring is cross-platform desktop email client with read receipts, link tracking, and a clean interface. It provides comprehensive features for email-clients workflows. The tool is actively maintained with regular updates and strong community/vendor support.