Buying email lists doesn't just damage your deliverability and brand reputation -- it can also put your email account at risk. Email clients like Gmail, Yahoo!, and Outlook don't want to be associated with accounts that recipients repeatedly flag as spam. Email service providers like AWeber go as far as immediately closing your account if it suspects you're sending unwanted content.
Click through rates. Once your subscribers have opened your email, are they actually taking the action you need them to take? If you think that you have a low click through rate, perhaps your body copy is not as effective as it needs to be. Consider the following: Is the copy of your email relevant to the subject line? Did you offer real value to your subscribers in the email? Is your call-to-action clear enough? Is the link easy to find?
Testimonials – If you work with contractors or freelancers, you can reach out to them to offer your testimonials in exchange for a link. Moreover, if you are using consultants’ or specialists’ services, you can also do the same as you do with contractors. Lastly, if there are customers who are happy with your product or service offering and they do not mind you linking to their site, this could be a good opportunity for your business.