have you tried to go the parameters (3 lines at the left top (for me) , parameters and general parameters.
Into the Notifications there is “Email sent sound” that you can uncheck.
Arnaud
on my Poco F1, I can’t change notification sounds in Mail. (v0.23-20220404175826)
I go to “Settings” in Mail, select one of my email accounts, then go to “Notifications” and “New mail ringtone”, I change the sound, and press OK.
It seems to be OK, but when I come back, the sound is not changed.
I tried to modify sound with OS settings (settings, app & notifications, mail, notifications, mail_channel, advanced, sound), here when I change and come back, the sound has changed, but it uses the sound configured in Mail that I can not change.
Note : mail_channel, it’s not user friendly, I have to test to know which “mail_channel” instence is my email account in Mail…