Technical solutions are described for a seller to bypass a spam filter. An example method includes sending, by a message preempting apparatus, for receipt by a server corresponding to the seller, a transaction identifier in response to a transaction between a user and the seller. The method also includes sending, by the message preempting apparatus, for receipt by a messaging server, the transaction identifier, where the messaging server, in response, bypasses a spam filter for a message that is associated with the transaction identifier.