Receiving networks use blacklists to evaluate the reputation of an IP address or domain. The majority of blacklistings result from sending Unsolicited Bulk Emails (UBE) to addresses that never requested them. This means you should constantly be checking to make sure you receive permission from your subscribers to contact you. This is why it's also a good idea to do a double-opt in for security purposes.

There are many blacklist providers in existence, and some carry more weight than others. It is important that your blacklist stays clean.

The first step to determining whether you have been blacklisted is to check on any of the following websites:

If your domain appears as blacklisted, we recommend you contact us immediately.

The best way to get this listing removed is to find out what caused it in the first place. If you want to avoid any further blacklistings on your list, send a reconfirmation email to all your recipients. This should be done every few months depending on how often you send emails and how large your list is.