Our company has an email list from an event we held last year. The email list was from people who registered online or via faxed form for the event, but we neglected to include an “opt-in” check box for future emails.

Are we allowed to send a one-time email blast out to those people (with opt-out information in the email) for the same event this year without being considered spammers?

Please provide any links to interstate emailing rules that you can cite. Thank you!

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