
Email Newsletter Best Practices
What works in email newsletter operation — double opt-in, list hygiene, subject-line testing, sending cadence, and the reasons most newsletters underperform their potential.
EPR pillar coverage of email marketing — strategy, platforms (Klaviyo, Mailchimp, HubSpot, Iterable, Braze), AI personalization, lifecycle automation, deliverability, industry playbooks, and failure modes. The most-owned channel in 2026.

What works in email newsletter operation — double opt-in, list hygiene, subject-line testing, sending cadence, and the reasons most newsletters underperform their potential.

Most email marketing efforts are all about the numbers, which is why plenty of marketers avoid removing any email addresses from their subscriber lists.

One of the most important parts of email marketing and PR campaigns is email newsletters.

According to research from marketers, email marketing is an incredibly successful and widely utilized marketing channel.

However, not all email tactics are created equal, and some are certainly more effective than others.

Mailchimp serves 400,000 businesses and was acquired by Intuit in 2021 for $12B. The 2026 operating model: single master audience, automation-first revenue, privacy-aware measurement, source-specific welcome sequences, and the configuration choices that produce wasted spend.

Try These Hacks to Grow a Company's Email Marketing List.


Email is the most controlled channel brands have for compounding customer relationships. The segmentation, cadence, and content choices that produce retention rather than unsubscribes.