Dig deep into your Google Analytics as well as Search Console to find out which content performs the best. Then, think about how you can upgrade that content with an attractive offer that will get you more emails. It should be something that directly answers the search intent and offers a solution or a clue to whatever it is people searched for. An excellent conversion tactic, for sure.
There are tons of websites and publishers out there that cater to your audience -- and larger portions of it. Guest blogging for these websites helps you expand your contact list to this audience. When creating content as a guest blogger for another website, include a call-to-action, as well as a link in you author byline, for readers to subscribe to your site's blog or email newsletter.
Thanks for weighing in Debbie. Completely agree, popups do annoy some people, and I can appreciate why. Like banner blindness, popup blindness is becoming more of a “thing” now too. But, they do work. And, I’ve found the more aggressive you are with them, the higher the conversion rate. Thrive Leads is the tool I use to build my email list https://www.robbierichards.com/recommended-tools/. Well worth a mention!
At the start of my online career i used to think that list building has no benefits but after doing some research on the topic and starting with the link building thing i came to knew it’s importance. It’s really necessary for website and blog owners to build lists or they’ll just let their selves down because list building is the game changer when Search Engines and Social Media doesn’t work for you.