PigeonPost
Mail, calendar and contacts in one window, local-first throughout. The everyday workflows that carry daily use, grouped so you can see the shape at a glance.
Grouped by surface: mail, calendar and contacts.
Search is where the big clients are most disliked. Because your mail is already cached on your machine, PigeonPost searches a local index and answers the moment you type, with no server round-trip.
Search everything cached: subject, sender, recipients, attachment names and the full text of mail you have opened, with operators like from:, has:attachment and dates, ranked by relevance. The index lives on your machine, so results come back instantly and work with no connection.
Passwords live in your OS keychain, never in a database. Microsoft sign-in stores a token there instead of a password. No PigeonPost cloud sits in the path; your mail is with your provider and on your machine. The local cache itself is ordinary data on your own disk, not encrypted at rest: pair it with your OS disk encryption (BitLocker, FileVault) if you want that protection.
The everyday windows you actually work in, in the dark theme.
Writing a message: rich text with a signature, reusable templates and file attachments.
The calendar: a multi-day event spans its days as one bar, alongside month, week and day views, reminders and emoji categories.
The fastest way to judge a mail client is a day of real use. Your mail stays with your provider the whole time.