The customer wants to send to a few recipients. The server acknowledges Jones and Brown with 250 Alright replies, but sends a 550 error reply to point that it doesn’t realize Environmentally friendly. Unsubscribe solution – Normally involve a clear and simple way for recipients to decide-out or unsubscribe https://itsupport68888.imblogs.net/76524506/the-mautic-diaries