When this happened to me, I went into settings, then Mail. There was a line that said ‘push’ with an arrow. I clicked on the arrow and the emails came through again. I know not why!
On my ‘elderly’ ( who knew) I Mac Pro it stopped the email facility, it was too old to get the Apple updates. DS an IT professional, came and installed another programme that restored the email facility.
The early release scheme it's a gimmick and helps no-one but criminals. Just build more prisons.


