Hi MYOBAcc,
Thank you for your post.
I apologize for the delay in my response. Generally, when emails bounce back, it could be due to rejection, an incorrect email address, a non-existent email address, or the receiver not whitelisting the MYOB domain: *@apps.myob.com. It's important to ensure that the receiver hasn't marked this domain as spam and that you've got the correct email address.
Furthermore, I'll be sending a private message to gather the recipient's email address for further investigation on our end to see if it's blacklisted. Please keep an eye on your community forum inbox for my message.
Please let me know if you require further assistance.
If my response has answered your inquiry, please click "Accept as Solution" to help other users find this information.
Cheers,
Princess