YES. JUST YES. This will be amazing. Thanks!
~Magic

Whenever you want to leave a message to another player, but said player is offline at the moment, you have the option to leave them a book in-game. Of course, this assumes that the person will find and read said book, which is not a guarantee when everyone travels a lot!
A better option involves the forums: as every Creeper's Lab player has an account, you can look them up, send them a private message and wait for the answer. This makes it much easier to write longer messages and includes links and image, as you need. However, not everyone checks the forums, making this a gamble.
To improve on that situation, whenever you connect to any Creeper's Lab server and have a private forum message waiting for you, you'll get a notification after a few seconds!

YES. JUST YES. This will be amazing. Thanks!
~Magic
Cool!
Exodio's Dad (Salifax's Father)

Chuck Norris doesn't need garbage collection because he doesn't call .Dispose(), he calls .DropKick().

This my signature area... mine, yes.. so... stuff.