Ho Choco
He really is an arse! The whole nicey-nicey act, is just that, an act. In terms of undermining your entirely reasonable request to not be contacted, there are more then one way of going about it. This is one of them.
He is contacting you not because he thought you'd appreciate the photos and but because you specifically told him not to contact you for any reason. He knew that this would upset you, and is testing the water to see how you react.
If you get pissed off with him, then he'll tell everyone, "oh poor ickle me, I can't win, I try to be nice and she's just so unreasonable" manipulative twat that he is
If you reciprocate his gesture, then he'll know that you're not serious about the no contact thing.
In your shoes I would just ignore, ignore, ignore, do not acknowledge in any way. If he continues to send you stuff, ignore, ignore some more. If he still continues to send you stuff, consider blocking his email address and instruct your solicitor to tell him to stop.
Sorry he's doing this, chin up!