Stop Airmail from using Pactor 4 with a Dragon modem.
Airmail 3.5.x must be used for support of the dragon modems.
Airmail does not make it particularly easy for the operator to avoid using the highest speed. But here is how to do it on 3.5.x:
Open Terminal > Modem
Select Pactor 3 on the dropdown menu. It will be used as the max speed FOR THAT SESSION.
If you close the Terminal window, the setting resets to P4 by default (If you have a P4 Dragon modem selected in Tools>Options>Connection tab.
You must set the ‘Mode’ on every session/connection! In order to not use P4.