Hi there Rem,
Personally I’m too lazy to do all the typing required for forum PBEM, plus I can’t the get software to work right, so I prefer TripleA PBEM. TripleA is also the best for minimizing human error (ie map mistakes).
On the other hand, ABattlemap will probably be the first to have a AA40P module. You will just need to download the Battlemap utility and the relevant maps.