How often should I email clients?

Just watched this video. It was worth it, even though you have to subscribe to their newsletter. Some interesting ideas. The short answer of the question, "How often should I email clients?"... is 5 times per week. 3 on. 1 off. 2 on. 1 off. Segmented customers who ask for more, get more via segmented re-opt-in. Watch the video for that means. ‪#‎emailmarketing‬ ‪#‎annapolis‬ ‪#‎maryland‬

from Web design emarketing product photography blog http://ift.tt/20X7mAQ