There are some good ideas here, but putting each sentence into its own paragraph makes for choppy prose. Split them out and consider each one on its own, but once each sentence is as tight as it's going to get, why not combine related ones into paragraphs?

The example email is, to my eye, three paragraphs:

  “Hey Ralph,

  I’m glad to meet another fellow Quebecois and lover of
  poutine last night at the meetup. If you’re in town next
  week, let’s meet up. I suggest Cafe Madeline for coffee
  on Tuesday at 3pm.

  I’m interested to learn more about example.com and tell
  you more about thoughtbot. If you haven’t already done
  so, take a look at thoughtbot.com to see some of our
  recent projects. Also, take a look at our playbook
  (playbook.thoughtbot.com) for more detail on our
  approach to building startups.

  Looking forward to hearing from you.

  -Rolf”