Ask HN: Useful articles on how to structure mail announcements for SaaS apps
I'm looking for good resources on how to structure email announcements for an SaaS app (specifically, b2b, with plenty of web-unsavvy users behind Microsoft Exchange servers).
I know about litmusapp.com for testing the emails, and I'm looking more for the high-level advice that answers the following questions:
* How often should you send announcements to your user base?
* What sort of stuff should you announce?
* What are great ways to structure the contents of the announcements so that they're actually read?
* What are things to avoid?
* How to present the contents of the announcement so it's actually read and perhaps actioned (e.g. when offering a time-limited discount)
* Any good examples of great announcement emails to get inspiration from?
Etc... (so, business-y articles rather than technical ones).
Thanks for your help.