You can set AltaMail as the default email app for your device when you are using iOS 14 or later.

To switch to AltaMail:

1. Open the device Settings app and scroll down to AltaMail.
2. Tap on the app icon to view the settings. Then tap on 'Default Mail App'.
3. Choose AltaMail from the list of email apps.

Note: Safari will override this setting and use Apple Mail for email links. You will need to delete the Apple Mail app to allow Safari to open another email app.