Many parents in high conflict divorce and joint custody situations communicate with their co-parent solely via email.
Unfortunately, email is a very unforgiving medium -- what is written in the heat of the moment can be printed out and referenced forever.
Send those critical emails to me first, and I'll help you clean them up to reduce the chances of anything coming back to bite you later. Email revisions are typically billed at the email consultation rate: two for $50. If it's a very brief email, I will adjust that accordingly.