Responses

Skips

Before sendout

Mapp Engage

This class describes messages identified by Mapp Engage as undeliverable before sendout. Skipped messages never leave the Mapp infrastructure, and the server does not attempt to contact the address. Possible reasons include:

• The address was on a system-wide blacklist or Robinson list.

• The contact has reached the system-wide message limit.

• The necessary contact information for the message type is unavailable.

Learn more about Skipped Messages.

Bounces

After sendout, but before inbox arrival

Receiving MTA

TMessages sent out by Mapp Engage but not accepted by the receiving MTA. Bounced messages never reach the contact's inbox. In some cases, Mapp Engage may identify a bounce as an error based on user activity (e.g., an open or a click) and declassify it. The Email Experience Council (eec) divides bounces into:

• Hard Bounces: Permanent failures, such as non-existent email addresses.

• Soft Bounces: Temporary failures, such as a full inbox.

Feedback

After inbox arrival

Contact

Messages that reach the recipient's inbox, but a response is generated and sent back to Mapp Engage. Examples include:

• Out-of-office replies

• Spam complaints

Both the Internet Service Provider (ISP) and recipients can generate Feedback responses.

Automatic responses, such as Out-of-office replies, are classified as Feedback but are not displayed on the Deactivation tab. They usually indicate a temporary condition and are not grounds for deactivation.

Communication Failure

Temporary issues, such as a communication interruption with the MTA.

Skips

Invalid

Domain issues, such as non-existent domains (e.g., ohtmail.com instead of hotmail.com) or DNS problems at the ISP.

Spam Complaint

Generated when the recipient or their ISP reports the message as spam (e.g., clicking the spam button). The settings for this category cannot be changed. The recipient is automatically deactivated in the group upon registration of a complaint.

Feedback

Rejected

Generated when an address no longer exists or the email account is inactive.

Bounces

Transient

Generated due to temporary issues like a full inbox or lack of disk space. The system attempts redelivery every six hours for two days. If delivery fails after this period, the message is marked as a permanent failure (transient bounce).

Unknown

Used when the exact cause of the failure cannot be determined. Messages in this category are still classified as Bounces.

Bounces

Blocked

Generated when the receiving MTA or the recipient blocks Mapp Engage from delivering a message (e.g., due to the sending address being on a blocklist). Many ISPs block emails from IP addresses or domains reported for spam, viruses, or policy violations.

Bounces