Try signing up to a few services and get some ideas from what they send out - I've been doing this of late. I think Huddle.net sends clean emails where it is c

Try signing up to a few services and get some ideas from what they send out - I've been doing this of late. I think Huddle.net sends clean emails where it is clear to see their point etc, and they don't email that often which I think is important with b2b type apps. I'd recommend taking a look at how they structure their communications. Good Data is another I signed up to, at times they send too frequently (if you launch 5 things over 2 weeks please don't send me 5 emails) and their emails are too wordy etc - but really good to have those emails as a case of what not to do.