I have used and recommended zapier a number of time and actually wrote some custom code to integrate with another startup (Lob): http://www.mooreds.com/wordpress/archives/1468

My favorite Zapier story, though, reflects how accessible they are. My company has a FAC, and we had just started using Zapier (this was probably 2 years ago). No one knew how to pronounce Zapier, so tweeted Wade and before the FAC was over, had an answer. Obviously a trivial question, but indicative of how they treat customers.

The article has some good actionable advice too.