What is the suppression list for
Think of it as a do-not-email list. Every account has one and subscribers are typically added to the list because they have been unsubscribed, or emails sent to the email address have bounced.
With these inactive subscribers recorded in your account as "suppressed" it prevents any further emails being sent to them. This keeps list sizes in check and helps to protect your sender reputation.
How subscribers are added to the suppression list
There are rules in place in your account to add subscribers to the list automatically, but you can also add people manually.
Any subscriber who meets the following criteria is added to the suppression list automatically:
- They unsubscribe themselves using a form or unsubscribe link in an email. Or, their status is changed to unsubscribed through your account.
- The subscriber marks one of your emails as spam.
- An email sent to the subscriber results in a hard bounce.
- Soft bounces are recorded for multiple campaigns sent to the subscriber.
Adding email addresses manually is good practice to ensure that people marked 'do not email' in an external system – for example, LoanProposals.com – are not imported to a list accidentally.
How the suppression list works
Whenever you add or import subscribers to a list in your account, we scrub it against the suppression list to check for a match.
If any matches are found, those email addresses will not be imported. An import report will display on screen showing the number of subscribers not added because they are "Suppressed".