Doota keeps a private copy of your mail on your device. That’s why the inbox paints instantly when you switch folders — and it’s why the app still works when you have no connection at all: on a flight, in a tunnel, on hotel Wi-Fi that gave up.
There’s nothing to turn on. Use Doota normally while online and your device quietly fills in: the thread list for every folder syncs on sign-in, and each conversation you open is saved in full — including formatted HTML mail.
What works offline
- Your inbox and folders — the full thread list, in every folder, as of the last time you were connected.
- Any conversation you’ve opened before — the whole back-and-forth, message bodies included, plus your team’s internal notes on it.
- Opening the app cold — you can close the tab (or the installed app) and launch it again with no connection; it boots straight from the device copy.
What waits for a connection
Anything that has to reach the server pauses until you’re back online — Doota tells you with a small “You’re offline” bar under the header, and puts things that can’t work on hold instead of letting them fail silently:
- Writing and sending — the Compose button is disabled offline. (There’s no offline outbox yet; nothing is queued behind your back.)
- Search — search runs on the server, so ⌘K says it’s unavailable rather than spinning.
- New mail — arrives the moment you reconnect, along with anything that changed while you were away.
- Attachments and remote images — files and blocked-image loads fetch from the server, so they need a connection.
Actions like archiving or starring also need the server; offline is for reading.
What’s on your device, and when it’s removed
The device copy is your mail, readable — the same as any mail app on your phone that shows messages without a connection. It stays in your browser’s private storage for that browser profile, and it’s removed when you sign out or switch accounts. On a shared or borrowed computer, sign out when you’re done and the local copy goes with you. The full picture lives in the security reference.
A conversation you’ve never opened while online isn’t on the device yet — so if you know you’re about to lose signal, open the threads you’ll want to read. Very large mailboxes (thousands of conversations) fall back to loading from the server, so offline reading may not be available there.