Chiefy

Chiefy, formerly Duet Mail, sorts your Gmail or Outlook inbox into categories such as To Respond, Meeting and FYI, and drafts replies that match your writing style. It is aimed at professionals who spend hours a week on email.

Drafts take your calendar and past conversations into account, so a meeting request can come back with real open slots. A chat assistant finds emails and attachments, checks your calendar and writes replies on request, and smart reminders bring up threads that need a follow-up.

A free plan gives a taste of summaries, drafts and inbox sorting. The Pro plan comes with a 14-day trial and unlocks the full set, and an Enterprise tier adds team analytics, shared workflows and a dedicated account manager.