I have been using K-9 Mail for several years on my tablets but lately (last few months) I have been unable to attach pdfs or zip files. They just won’t attach. If I send, the email gets sent, but without the attachment. I just tested with a jpeg and it came through fine. I am using K-9 6.804 with the most recent Android 14 OS as of last week on a Samsung Galaxy Tab A7 Lite.
Any ideas, anybody?
EDIT: I can send a pdf if I rename its extension to .jpg.