So many e-newsletters are designed using HTML it is now assumed this is the norm. But does HTML contribute to your newsletter getting more likely to read?
The e-newsletters I most enjoy reading (which seem to be published by successful businesses) are quite plain, just with a logo and a few pictures. Content seems to be more important, with a highly relevant message combined with a call-to-action. Frequency depends on whether they have a valid point to promote or publicise, and always contain important information, impelling action points, contextual links to relevant landing pages, unrefusable special offers, good business or lifestyle advice, and clear, noticeable contact details.
In other words, does content take precedent over design?