Hi, Bounce messages are generated by the server you're trying to send to, so you should get the same messages regardless of what client you're using. If you have reason to believe you're not getting bounce messages that you should, then let us know more details. We'd love to help. :)

The server I am sending to which gives the most trouble is an Ontario outfit by the name of "Start.ca" My provider is 'Shaw.ca' thank you

Could you please provide information about what is making you think messages are not being delivered? That will help us determine what the cause of the problem is and what steps to take.

When I send a message to my brother in Ontario at Start.ca, and ask him to let me know if he has received it , he still does not respond. He has chronic problem with Start.ca in that he knows he is not getting all his messages. Thank you for trying to help. Chisi

Let's start with something simple... Has he checked his spam folder?

Yes. Sorry for my tardy response. Chisi

I noticed that you referred to a feature in Outlook. Maybe you're referring to return receipts? That's a standard feature. In the Thunderbird compose window, go to Tools > Return Receipt. For more information, check out the following article: https://support.mozilla.org/en-US/kb/configuration-options-accounts#w_return-receipts-panel

It isn't return receipts I;m concerned about. For example if I send a message to a contact who unbeknownst to me has changed their address with Outlook I would get an automatic "bounce back' saying something like 'unknown address' or something. This does not happen with T'bird. thanks for your persistence. Chisi

Next time you're writing a message, go to Options in the menu and tick the box for Delivery Status Notifications.

If the servers involved support it, you should then get a delivery notice.

However, I don't think all the delivery failure notices are dependent on this setting. A message being deliverable (or not) is largely determined by the receiving server and has little to do with the client involved.