4. Get Your Timing Right

During holidays, people tend to be away from their computers. When they return they'll get your message along with a ton of other mail that has piled up. Chances are they will delete all but the most important messages in a rush, without a second look. This is why you should avoid conducting major email marketing campaigns during December, January, July, and August.

What's the best day to send your email? This question is probably overrated. Nevertheless, here's a simple rule of thumb. If your message is of vocational interest and read at work, send it on Wednesday or Thursday. If it's primarily read at home and focuses on spare-time activities, send it on Sunday.