Hope,

Please, please can you block ex T? He might take this as harassment given how things ended and I really don't want him to hurt you any more.

Maybe you can write emails but send them to a second email address of yours?

Write but don't send and take them in to show new T?

I know it hurts how things ended but he has told you he doesn't want any more contact with you. Legally this could be further evidence of harassing