I'm running High Sierra 10.13.3 and mail 11.2
When I go to send an email all works fine, the mail sends and all is good, but if I type out a email and then attache a file, any file or photo and send it, all seems to be fine, but the person I sent it too only receives the attachment and not the text in the email.
If I check in my sent folder it shows all has sent but thats not the case.
I have sent to different people, even myself but never get the text and attachment together.
Any ideas please, its driving me mad, as I'm having to send the email then the attachment separately.
I did just download thruderbird and that works fine, so it has to be mail.
OS X Yosemite (10.10)