Your email subject lines stink because your writing stinks.
Reread your last email or ezine to your customers - blah, blah, blah, blah, blah. Your writing is more strangled by corporate speak than Lady GaGa in her own clothing. Extracting an alluring two or three word subject line from a boring article is impossible.
Here's an example.
If you're informing your customers why you dropped a service provider, you could simply state in your email, "We were no longer pleased with their level of quality." Or you could really grab their attention with, "We fired them. It was just a bad romance." That sets you up to use the subject line: "Bad Romance."
Scared to take a risk like this? Try it once. When you see your open rates soar, the fear will float away and you'll "Just Dance."
PS: I'm emailing this article later this week with the subject line - "Strangled by Lady GaGa References." I'll tell you how it goes.