With consumers getting increasingly frustrated with targeted ads and actively taking steps to avoid them, newsletter sponsorships are looking more and more appealing. A newsletter sponsorship is a paid advertisement placed inside an email newsletter. Compared to other advertising channels like websites or social media platforms, these placements tend to reach more engaged audiences while facing a fraction of the competition.

Newsletters have been around for over 40 years and the medium is still growing. Just in 2020, 53% of publishers saw an increase in engagement with their newsletters since the start of the COVID-19 pandemic. In a world becoming increasingly concerned over data privacy, newsletter sponsorships offer a way for advertisers to target audiences without coming across as invasive. 

Source: https://www.marketingdive.com/spons/why-newsletter-sponsorships-are-the-future-of-targeted-advertising/616787/