[Alneyan]

My own advice would be to have backup mail addresses to get the turns, as some servers (either when receiving or sending mails) have the annoying tendency of losing some mails. Even if your own server is reliable at 100%, the servers of your players could be more likely to have problems.

Two or three mail servers can do the trick, or perhaps having an automated reply when you receive their turns, or any other similar system. If you want to go with a heavy-duty solution, a FTP server is always available, though it would probably be able to stand on its own then.

Another idea would be to determine a standard procedure for away players, or players leaving the game while it is going on. Likewise, agreeing on what to do when a player will stale the turn may be a good idea. It is something I have failed to do in my own "Not Stupid Just Slow" game, and it is always annoying to have to take a decision in an "emergency".

A Last suggestion would be to have a fixed hour for your deadlines, for example 1600 (your own time). It has the advantages of setting a routine, and players can email you when they have not received their turns, two or three hours after the usual deadline. And if you receive all your turn files before the deadline, you can always run the turn in advance, while keeping the same deadline hour. The use of this kind of hosting is mostly for players with a strict schedule, and not having much time to play their turns everyday.