Hi @hillrm10 ,
Thanks for raising this to us, to better understand the situation please post the actual error message when sending email with attached filem also confirm the Email client being used.
For testing purposes, please try sending emails with attachment using our Post Office (https://www.tpg.com.au/home/postoffice).
I am no longer able to receive emails with attachments over 1mb. The email bounces and the sender receives a message that the attachment exceeds the size limit.