OS 10.12.6

I have sent 2 emails which go into the outbox and keep flashing back between the message I sent, and back to the outbox, even as I type it is happening.

I don't have the mail open now but the desktop is flashing back and forth.

What's going on?

jaybass


OS 13.6.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD