The good thing is that if you are able to harden your mailing rules / firewall rules to the point of fixing it, those rules apply to the rest of the accounts too, so will serve as protection in the future. You should also look at blacklisting as many known spam IPs as possible. Depending on the type of business, for example if you only deal in one country or state, geofiltering could cut down on the spam considerably. Maybe heavy filtering may solve the issue. I suppose you should try to fix the original account. And the end user will have crocodile tears that you changed their email. Of course this only solves the problem for that email account, this one time.
#How to unsubscribe from emails in bulk update#
You can also grab the original mailbox list, and send a curtesy email telling all contacts that the email address has changed to and to please update their contact information. That way it's a dead end for spam, but legitimate inquirers are redirected to a customer service line. Leave the old account with automatic reply ' This account is no longer active, please reach us at 1-800-GEN-HELP' That way they can have a new account with no spam, and all of their old stuff. Even if there are thousands this won't take that long.įrom there make a new account and throw the old mail file on the new account. I would probably grab that file, and just manually destroy the obvious spam. You can store the contents of an outlook account. First thing is make sure you have control of it, and the credentials are no longer compromised (if they were). even if you regain control of the account there is nothing stopping someone from perpetually adding the email to more spam lists.
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