I use an Anytone UV878II Plus. There are some quirks with the radio that I will list here as I figure them out. First off, make sure you update the firmware (as of writing I'm updated to firmware version 3.02n and I updated the aprs board to v1.06.

Send an Ana APRS SMS of form emailadd@dom.tld message to EMAIL-2. For the anytone, you need to end the messag with {JV} (for some reason).

To post a toot thru send a message addressed to MSTDN