When it comes to email marketing, there is no “perfect” recipe. The ideal is to try. Test, test, and test some more. Adapt your message as needed. Try new things, explore alternatives. Be creative. Best practices are ideas. And they work, providing real results. But only if there is a strategy behind them and it is a damn good one, based on experiment, analysis and flexibility.
Nonetheless, there are some things that you could or shouldn’t do in relation to your email marketing efforts.