[Cross]

Whenever I PBEM, I use a preferences document that I have saved on my PC. I send it to my opponent to agree with or adjust, so we're both 'on the same page'.

It includes things like:

Points:
Visibility:
All realism preferences ON (settings at 100%)
Fast artillery: OFF
Map Size:
Max. 15% artillery
Onboard arty only (unless otherwise agree)
No assigning artillery until your first move turn
No choosing allies or captured equipment without agreement

I also include:
Turns: 25 (About 7 to 10 turns per week)

I find most opponents average about 7 turns a week.

Personally, I couldn't fight a battle with 5 days between turns, I'd lose the plot. It could be your opponent has taken on too many games. Have you asked him why the slow response?