Spark is Readdle's email client with an AI layer: a smart inbox that separates people from newsletters and notifications, AI compose and reply drafting, and one-line email summaries. It runs on Mac, Windows, iOS, and Android with all your accounts unified — Gmail, Outlook, iCloud, IMAP — in one place.

The smart inbox is the feature that sticks. Instead of folder gymnastics, Spark's priority sorting means the humans who actually emailed you sit on top while the newsletter pile waits below. Team features — shared drafts, email delegation, inbox collaboration — quietly make it one of the few consumer-grade clients that scales to small teams.

The core client is free, with AI features and premium tools on a paid tier for heavy users. The main tradeoffs: your mail routes through Spark's infrastructure for some features (a privacy consideration for sensitive industries), and superfans of keyboard-first speed will still find Superhuman faster — at ten times the price.

🐱 SAGE SAYS

The best default answer to 'my inbox is chaos and I won't pay $30/month.' Set up priority sorting, mute the newsletter tab, and check it once a day — that habit is worth more than any AI feature in the app.

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