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How are the bounced email addresses managed?

After five separate occurrences of bounces, an undeliverable address is removed. We will make several attempts per hour for a total of five days to send a message. After five separate consecutive messages are returned as undeliverable, the address will be removed. We make several attempts to allow time for email systems to be repaired, which in some cases can take up to a week.

There are many causes for undeliverable mail. Changes of email address, a full mailbox, or an email system being down are all possible causes. However, once a list member's mail server tells us that the email address is not in existence, we will immediately unsubscribe it.

Since some of our clients send more than five messages a day, if bounces occur from multiple messages sent the same day, it is only counted once.

The one exception to this rule is AOL. AOL has requested that bounces should be unsubscribed in less than five bounces. Therefore, AOL addresses that bounce twice will be unsubscribed.

It is not recommended to try to suspend or unsubscribe undeliverable addresses on your own. Our system is set up to remove undeliverable addresses after verifying there is not a legitimate reason for the bounce.

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