Hi Piano,
you are sounding better - good stuff, I like to hear that :-)

As for the email,
don't respond,
he will checking his email daily after sending that email,
he will be looking for a response from you,
and there won't be one,
he'll send another email after that asking if you had rec'd the first email, then we can worry about responses.

So to recap....
do nothing for now ;-)

Continue concentrating on you and the baby.

His email speaks nothing to me,
it's all about him, how hard life is,
how hard is job is, trying to come with excuses as to why he hasn't been contacting you regularly and inquiring regularly about his daughter, I can understand phone calls being expensive but emails?

C'mon, he can do better than "being taken into the turmoil of new job", hard to feel bad for someone who chose that life and that job, don't get sucked into that trap.

Have a good day ;-)