Email writing

Superhuman sits on top of your Gmail or Outlook account, and Shortwave works with Gmail accounts, so your address stays the same. Grammarly works inside the tools you already use, from email to documents. Ellie drafts replies for you to review and send. You only change apps if you choose Superhuman or Shortwave.

The free plan covers basic grammar and spelling corrections wherever you type. Paid plans add full rewrites, more AI help and a consistent style across a team. If you mostly need typos caught, the free plan does the job. Teams writing to clients all day get more from the paid tiers.

Superhuman works with both Gmail and Outlook and is built for doing almost everything from the keyboard, with a split inbox, reminders and scheduled sends, from $33 a month. Shortwave is Gmail only and leans on AI that searches your inbox, summarises long threads and sorts what needs you first. It starts at $30 per seat after a 14-day trial. Outlook users have one choice of the two.

Ellie learns your writing style before it drafts anything, so replies read as if you wrote them. Superhuman and Shortwave also draft with AI inside the inbox. Read each draft before sending, especially when prices or dates are involved. Editing a good draft still takes less time than starting from a blank reply.

These tools need access to your mailbox or what you type, so check where each vendor processes data and whether they sign a data processing agreement under GDPR. Ask whether your email is used to train their models. For client data under confidentiality rules, get your own policy in writing before you connect the account. Grammarly's checks run wherever you type, so include documents in that review.