Wrong user email address in user account polls every 3 hours - mail queue

hello out there,

i use nextcloud 23.0 on debian 11.

i add a user but used the wrong email address for the user account.
i send emails through my configured gmail integration which works fine.

but now i get every 3 hours emails that i used the wrong user email address and i saw that i used @igmail.com than @gmail.com.

i corrected the wrong email address and everything is fine now without getting every 3 hours the same google email that the first email address with @igmail.com could not be delivered.

where can i find the polling wrong email task in nextcloud?

i can not found help for this situation

best regards

i used occ command mail:clean and now it is fine