Question answered! Thanks.
Correspondent chess on chess.com
You can also use an analysis board and test out moves on it.
NOTE - This does NOT mean you can use an engine.
Some officials even say that checking the positions with engines (without it telling you the best moves, used only to assess the positions and realise the advantages) is fine, but I think that's pushing it.
Engine use is not permitted in any form
Question answered! Thanks.
More details in the following:
https://support.chess.com/customer/en/portal/articles/1444774-what-are-the-rules-for-playing-
What are the rules with it? I here people consult opening book while playing them. Is this not considered cheating?
I have played many correspondent chess games but never sonsulted opening books ect. I have treated them worse than blitz.
I just want to have the rules clarified because I want to play a serious game now.