How to limit the number of outgoing messages in Plesk
Now let’s learn how to limit the number of outgoing email messages.
Click Show More to expand the list of options for this domain.
Then click the Limit Outgoing Messages option.
This is where you can put a limit on the number of messages that can be sent from your account.
Note that the limit you place must be lower than the limit set for your subscription.
That’s it! The outgoing message limit has been changed.
This is the end of the tutorial. You now know how to limit the number of outgoing messages in Plesk.