Currently, you can receive rejections for the following reasons.

Message setup:

• 101 - 102 - Sender address not validated on your account
• 100 - Invalid recipient address

Blacklist:

• 121 - This address cannot be contacted because it is on your blacklist

NPAI list:

• 131 - 132 - This address cannot be contacted because it is on your non-existent address list

Red list:

• 111 to 114: This address cannot be contacted with OxiMailing (the person has specifically requested not to receive any more emails from the platform)

In case of multiple shipments (multiple recipients):

• 180: All addresses you are trying to contact are blocked (by blacklists, NPAI, or red list)