Emails created by clicking Reply and editing are not treated as new because of persisting watermarkDescriptionA user behavior exists where a message is received, Reply is selected, the subject is changed, and information is added to the body before sending it back to the instance. The expectation is that this email is treated as new, even though it was created as a reply.This causes the instance to read the watermark and treat the inbound mail as a reply. In some cases, this is not desired behavior.Steps to Reproduce Email the instanceThe instance creates a record and sends a notification back This notification contains a watermark Click ReplyIn order to make a new email, change the subject and bodySend the new mail to the instance If the instance has a reply rule, this mail is added to the existing record. If the instance does not have a reply rule, the email is not processed as new. WorkaroundThis is as-designed behavior. A reply is matched by body content, subject content, or the In-Reply-To header. The In-Reply-To is placed there by the email client when you click a Reply button. The affected inbound email actions need to be reworked, or the prefix properties need to be changed to try to treat replies differently. Ref.: A new case from inbound email is not created if the email message is sent editing an old reply to a previous case Inbound email actions Omit an email notification watermark Criteria for matching email to inbound actions Related Problem: PRB761867