I am not receiving attachments in Mail
In the past month, mail does not reliably receive attachments. It does not receive if sent to a group, it sometimes selectivly receives some of the attachments, or it does not receive at all. Sometimes the paperclip icon appears but when I hover, the attachment box does not show up.
MacBook Pro (Retina, 15-inch, Mid 2014)
MacOS Sierra v. 10.12.1
Please help!
MacBook Pro with Retina display, iOS 10.2