US Unlocked S20 Ultra extremely slow to Send Email on AT&T LTE.

I just did a test on 4G LTE with WiFi turned off. To send a 1.3 MB image from my POP3 Comcast email took 23 seconds to complete. Switched over to send from my IMAP Comcast email the same image took 41 seconds to complete. Interesting. I think I'll stick with POP3.
 
Wow, regardless of the server you use, that's pretty slow. What are your usual download/upload speeds if you go to speedtest.net or use the speed test feature in the Google app (i.e., search "speed test" in Google)?
 
A lot of the time with Comcast email seems to be taken up with getting past the log-in, be it POP3 or IMAP.
 
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