You can use the device "Shortcuts App" to edit AltaMail shortcuts such as "New Email" or Disable notification sounds

Open these links on your iPhone/iPad to install these saved shortcuts. Make sure you open these links in Safari on your device. Do a long tap on the link and then choose "Open in Safari"
New Email Add to Shortcuts App
Disable notifications for 1 hour Add to Shortcuts App

To create your own shortcuts, open the device "Shortcut App" and tap on "Create Shortcut" in the Library screen.
Then type AltaMail in the search field in the top left and choose one of the AltaMail shortcuts.

This is Apple's help for adding a shortcut to the home screen:
https://support.apple.com/en-nz/guide/shortcuts/apd735880972/ios

More shortcut details