Gmail, Microsoft, IMAP and POP3 accounts
Sign in to Gmail, to Outlook.com, Hotmail, Live or Microsoft 365, or to Fastmail, iCloud, Yahoo or any IMAP, POP3 and SMTP server. Penguin Mail finds the server settings from your address.
One inbox, synced from the tray
Read every account in one inbox or one at a time. Penguin Mail keeps syncing from the system tray, with an unread count and notifications you can act on.
Your calendar
Day, Week, Month and Agenda views of every calendar on every account: Google, Microsoft, and CalDAV where your provider offers it. Answer an invitation from the message it came in.
Contacts
Your contacts from Google, Microsoft, or CardDAV where your provider offers it, and suggestions from the people you write to as you type a recipient.
OpenPGP and S/MIME
Sign and encrypt through your own GnuPG. Penguin Mail never holds your keys or asks for a passphrase.
Rules
Gmail filters, Microsoft inbox rules, and Sieve rules where your provider offers them, listed in plain words, with a form to add one.
An optional assistant
Off until you choose a model. It can run on your own computer, through LM Studio or Ollama, and it asks before it sends mail or changes a setting.