Je klei­ner die Liste, desto bes­ser die Öffnungsrate

Höhere Empfängergruppen füh­ren zu nied­ri­ge­ren Öffnungs- und Klickraten — das zumin­dest meint ExactTarget, wie MarketingVox berichtet:

Lists with 100,000 or more names had an average open rate of 18.2 per­cent and click-though of 3.6 per­cent. Those with 101–1,000 names had an open rate of 42.1 per­cent and click-through rate of 6.8 percent.

MarketingVox: ExactTarget: Smaller Email Lists Perform Better