Long story short: he was violent, I left, fast forward four years and he is still resentful, controlling and abusive. Court gave him pretty much 50/50 child care one year ago. Since we separated he has been sending horrible messages/calls/emails and even got his girlfriend to join in.
Over past 12 months I called police 5 times. Eventually (three months ago), they took him in under caution to interview him. He cried and said he didn't know he was upsetting me so was let off.
Now I get shitty emails written by his girlfriend in a pseudo professional bitch style which are still full of blame, criticism and insults. To limit the BIG impact it has on me (anxiety, nausea, depression) I have blocked them both from my phone, said they can call by new partner in an emergency and direct them to an email address for everything else which I check once a week.
When we check the emails we filter our the crap and only respond to genuine concerns, ignoring the tit-for-tat "lets argue about something" content.
I now have a letter from his solicitor saying I have suspended communications and my hostility leaves them with no choice but to go for sole custody.
What degree of communication should I provide to an abusive man?
The emails are so upsetting to me I have brought my partner in to help stay grounded and write neutral focused answers but even he has had enough. He is saying that its all rubbish and doesn't warrant responses. I am frightened to ignore these emails completely because then my ex could say in court that I am not communicating with him. On average there are three emails a week.
I don't know what my rights are and don't know what to do now.
Appendix - Example of the shitty "lets argue about something" content:
To give an example: his latest obsession is that the school DD goes to is inferior (its rated good and significantly improved since the Ofsted inspection ,its one of the most sought after schools in the borough). He says there is air pollution and a bad demographic profile (we live in London and he's a racist). He doesn't understand the way they manage homework (they host regular meet the teacher events and have a page in the book to explain). He is concerned that DD is a bully and why am I not telling him or managing it (DD made one silly comment to another child once, not bullying). The list goes on. I keep referring his concerns to the school who have been trying to get ex in for a meeting since November 2016 but he says he is too busy to go in.