What Are Some Must-Subscribe Newsletters in Email Marketing?
Here are a few highly recommended newsletters for email marketing professionals:
1. [Litmus](https://www.litmus.com): Offers in-depth articles, case studies, and research reports. 2. [HubSpot](https://www.hubspot.com): Provides comprehensive guides, tips, and templates. 3. [MarketingProfs](https://www.marketingprofs.com): Features articles, podcasts, and webinars. 4. [Email on Acid](https://www.emailonacid.com): Focuses on email testing and optimization. 5. [Campaign Monitor](https://www.campaignmonitor.com): Offers practical tips and industry news.