Campaigns may be delayed due to the rate limiting in place at the recipients' domain(s). This means the recipients' domain(s) may have rules in place about the volume of email that can be received at any one time.
In order to abide by these rules and ensure continued delivery to the domains in question (i.e. in order to prevent getting blocked or blocklisted), we will adjust the amount of email we send to the domains at a single time in order to ensure we do not exceed the acceptable limits.
Occasionally this may result in certain emails being temporarily held back. The amount of time the email may be delayed will depend upon the rules in place at the recipients' domains and the amount we are trying to send to them. It may last anywhere from 2-24 hours.
You can also monitor the delivery of your campaigns from within your account at any given time to know the number and percentage of recipients that are awaiting delivery:
- Click Reports in the main navigation menu.
- Click the blue down arrow next to the campaign name, and select More.
- Navigate to the Sends tab. This tab will provide all of the current information for all sends (including tests and sends to additional recipients). Refer to the third and fourth columns for the number and percentage of recipients awaiting delivery
at that moment.
If you are experiencing delays across all domains or delays that last more than 24 hours, please contact Support.
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