Spark Mail: AI Email Assistant

Spark Mail is an AI-powered email client for individuals and teams that unifies Gmail, Outlook, Yahoo, IMAP, iCloud, and more in one inbox while integrating calendar management and cross-device syncing. The built-in AI Assistant can summarize long threads, draft replies, rephrase messages, and adjust tone to help you move faster.

Key features include Smart Inbox, Email Essentials (mark done, mute, schedule), Gatekeeper, priority sender tagging, calendar integrations, and connections to apps like Notion, Asana, and Things. Spark encrypts data, uses Google Cloud security, and is GDPR compliant. It also supports team collaboration with co-authoring, private comments, secure link sharing, and read receipts. A free plan is available, with Spark Plus/Pro trials for advanced features, and Spark works across platforms.