Related Questions:
Why didn't my email go through?
What does it mean when an email I sent comes back saying after repeated attempts to contact the recipient's email system it didn't respond?
Answer:
If you send an email through Event Temple and receive this error message back, it means there is an issue on the recipient's end. Event Temple Support will not be able to assist with troubleshooting this and you will need to find other means of reaching out to your contact.