A method for processing email is presented here. The method begins by receiving email capture criteria for incoming email messages directed to a destination tenant of a multi-tenant database system. The method continues by comparing the email capture criteria to searchable information conveyed in the incoming email messages. When the searchable information in a candidate email message of the incoming email messages matches the email capture criteria by at least a threshold amount, the candidate email message is identified as a matched email message. The method continues by saving a copy of the matched email message for diagnostic analysis, and performing incoming email processing on the matched email message.