The Per Sender Rate Limit helps manage the number of recipients to whom emails are sent simultaneously. This reduces the likelihood of emails being blocked due to mass sending. As a result, the potential impact of delayed emails on individual users is minimized.

The table below shows the limit of allowed recipients per hour and per day.

Please note that these rules count the number of recipients, not the number of emails

Need an increased Per Sender Rate Limit?

Feel free to contact us and provide the following information:

• The Hornet.email mailbox for which an increased “Per Sender Rate Limit” is needed
• The planned sending volume of the mailbox