No, you are not spamming them as you had a legit business connection to them and the email relates to that. However include the option to Unsubscribe from the l

No, you are not spamming them as you had a legit business connection to them and the email relates to that. However include the option to Unsubscribe from the list within the email. If you were emailing about something completely unrelated then that would probably not go down well.