@G Todd.
You’ll find the settings in Menu > Tools > Settings > General > Notifications
You can make (record) some in .wav format or get some at the following links
https://www.thesoundarchive.com/email.asp
https://www.sounds4email.com/sounds/popular.php
Save in a folder and then click on the arrow in the corner - next to…“new_mail.wav”
and navigate to one of the saved wav files.
The screenshot shows the Default Settings for both accounts - Free version,
but if you want a distinction between the 2 accounts - You choose 1 account
and associate it with a certain voice notification,
Then choose the 2nd acoount…and do the same…
This way you’ll know which account has activity…
Peter E.