[Fuerte]

I think that I got it now, PBEM Helper 1.3.355 is available. From the readme:

If you are running Host, make sure that e-mail address field contains the e-mail addresses of all players, separated by ; character. E-mail addresses must be in the same order as the nations, sorted alphabetically:

abysia
arcosep
atlantis
caelum
ctis
ermor
jotun
machaka
man
marignon
mictlan
pangaea
pythium
rlyeh
tienchi
ulm
vanheim

There must be as many e-mail addresses as there are .trn files. If host is playing as well, leave the e-mail address empty for that nation (but still add that ; separator). When all players have sent their .2h file to you, then the game status changes to Host. Double click the game to generate the turn. Host will send all *.trn files (except your own nation) to all players. If you have Automatic Play enabled, all this happens automatically.

If you are just a player, make sure that the e-mail address contains the host's e-mail address. Player will send just one .2h file.

If you want to use the password sending with Ctrl+Shift+P, make sure that the password contains only numbers, not letters (sending letters does not work for some unknown reason).

If you want to hide a game from PBEM Helper, set - to e-mail address. You have to manually edit PBEM.INI to make it visible again.