In your browser
Open DMU Mail at app.dmu.email in Chrome, Edge, Firefox or Safari. There is nothing to install, and you can add it as an app if you want a window of its own.

What it does
Nothing to install
Open and sign in
Go to app.dmu.email in a current Chrome, Edge, Firefox or Safari and sign in.
Always the newest
There is no update to run. When a new version is ready, a notice offers to reload.
Install it as an app
Where your browser allows it, choose Install DMU Mail in the account menu, or Add to Home Screen on an iPhone.
Keeps what you had
Without a connection it shows what is saved on this device. Sending and search come back when you reconnect.
How it works
Open, install, notify
- 1
Open it
Sign in at app.dmu.email with your password, a passkey, or Google or Microsoft.
- 2
Install it, if you like
Choose Install DMU Mail in the account menu where your browser offers it, or use its install button.
- 3
Turn on banners
In Settings › Notifications, turn on Desktop notifications. The browser asks for permission once.
Good to know
The details
- Browsers
- Current versions of Chrome, Edge, Firefox and Safari.
- On a computer
- Keyboard shortcuts, a command palette on Ctrl K, dark mode, comfortable or compact lists, and panes you can drag wider.
- Offline
- Writing a new message needs a connection. A draft that was already open keeps what you type on this device until you are back online.
- Also on
- The phone layout of the same app, and DMU Mail for Windows with a taskbar count and the tray.
Be one of the first teams in
We let a few organisations into the private beta every week. Join the waitlist and we’ll email you when there’s room for your team.
Three quick questions. No card needed.