attachments not sending?

Hi, I have been having trouble with recieving and sending attachments
I sent a word doc to a firend at yahoo address and it never makes it.
but this has happend before…in general…
I ended up using my microsoft email account

any setting s i am missing

The email never makes it, or the attachment doesn’t?

If this has happened before, it’s not an eM Client issue.

For the record, I find Yahoo mail very unreliable once you’ve exhanged a fair few messages with someone on it. As I understand it, Yahoo think you’re spamming and deprioritise you.