Email limit
From ISPWiki
Email spamming is not only annoying to email users, but is also very expensive to providers. That's why they are trying to fight spam by preventing their customers from sending spam-like emails. For example, they may forbid their customers to send more than 500 email messages per day.
This form can be used to provide the maximum number of email messages that a mailbox is allowed to send per hour. When email send limit is reached, email will not be sent until one hour is over.
- Email limit - provide the email sending rate limit, i.e. the maximum number of emails that the mailbox is allowed to send per hour.
You can also provide the maximum number of emails that a user's mailboxes or mailbox is allowed to send per hour.

