
Shortwave is an email app for Gmail with AI built into everything, made by engineers who worked on Google Inbox. Every thread gets a summary. You can search your whole email history by asking a question in plain English, and a writing assistant learns how you write. Tasklet, its agent, can handle multi-step email chores without you stepping in. It also sorts your inbox for you. Related emails are bundled together, low-priority threads fold away, and the things that need you show up first. The big limitation is that it only works with Gmail and Google Workspace. If you're on Outlook, Exchange or Microsoft 365, you can't use it. At $8.50 to $14 a month, it's very good value if you live in Gmail.
Shortwave was built by people who made Google Inbox, and it shows. The bundling, the way important mail rises to the top, the sense that your email is being organized for you: it's Inbox with AI added. The thread summaries alone are worth paying for if you get more than 50 emails a day.
Tasklet, added in January 2026, turns it from a nice email app into something that saves real time. It runs multi-step jobs in the background, like drafting a follow-up, waiting three days and escalating if nobody replies, without you touching it.
Best for freelancers, developers and anyone handling a lot of email in Gmail. The Gmail-only limit is the deciding factor. If you're on Outlook or Exchange, Shortwave simply can't help you. If you're on Gmail, it's the best way to handle email right now, at $8.50 to $14 a month.