In this article, Chad White provide some tips for testing your subject lines. He also posted some great tips if you're looking for inspiration for your next subject lines:
- Repeat or tweak successful subject lines from your past campaigns.
- Pay attention to the searches run on your Web site and the organic searches that bring you traffic from major search engines. Consider using words from the most popular searches in your subject lines.
- Mine the subject lines of your closest competitors for ideas for words and phrasings.
- Take note of headline constructions used by newspapers and magazines, especially in their online editions, which some are now optimizing for search.