Please log in to access Return Path product content. If you are a SFMC customer, please log in to your SFMC account to access additional Return Path Help Center content. Everest, BriteVerify and 250ok customers do not need to log in to access Help Center content.
The rejected rate is defined as the percentage of email blocked by a mailbox provider during the SMTP conversation. Mail from your IP or domain may be rejected for many reasons, including sending spam, excessive complaints, and blocklistings.