Make sure that your e-mail addresses are valid

[LBRB Training Coordinator]

There are no limits on the amount of e-mail you can send to your customers, but beware that some e-mail providers (notably AOL and Verizon) will begin to block your mail if you send messages from e-mail addresses that are not verifiable.

When the system sends mail, it does so on your behalf; that is, the e-mail appears to come from the system administrator and/or registrar accounts.  If those are not real e-mail accounts, the messages might rightfully assumed to be spam, just like the African Prince who wants to share his fortune with you, and the recipient's e-mail provider will do them a "favor" by blocking further messages.

It is extremely difficult to be removed from such a blacklist.  In fact, it is virtually impossible to remove a domain from an AOL blacklist.  Verizon is not quite as difficult, but requires some jumping though hoops before they'll remove a blacklisted domain.  Remember that those companies will always put the online safety and security of their customers first, so simply play by the rules and you won't have any problems.