Editor’s Note: Spam filters have become much more sophisticated than the subject line triggers listed in this post. For a more up-to-date guide to email marketing, check out our free guide to creating email newsletters people actually read here.
Writing the subject lines for your emails can be one of the most stressful steps of email marketing. Is it engaging? Too short? Too long? Too boring? Will people click ‘delete’ because of it? Or will they open it? Will it even get to them, or will it trigger SPAM filters? It’s the last of these concerns that we’re here to help with today.