Tweet them Follow them on social media You can divide the crowd into cells and see if these engagement strategies increase your success rate to justify the extra time spent. personalise Another oft-talked-about test is adding more personalization to outreach emails. Sure, you can start with basic custom fields, but you can also spend more time referencing an article you've read recently, or use your knowledge of them to see if that helps your response rate. follow up Of course, you can also test different subsequent sequences. Not just what was sent, but when it was sent, or also based on the action taken (eg, send a follow-up series for clicks and a follow-up series for opens). This logic-based test is relatively complex, but feasible. different people If you have different populations as part of your outreach, you can divide industry mailing list into different cells and feed them in the exact same outreach order to see how they respond. This is useful if you are getting leads from different sources and you want to see if they are different. in conclusion With everything I've done in business and life, I always see the biggest improvements when I implement tracking. I have taken it offline in areas like fitness and nutrition and have seen it work wonders. Marketing is the same. How will you track your next outreach? Read now: What is outreach and how the average business owner does it How to Do Blog Outreach