Make your content work harder for you
Know the people behind the metrics. Unify subscriber and engagement metrics across every edition to plan, build, deliver, grow and monetize smarter.
Unify audience profiles across your brands
See subscriber data and engagement across titles, all in one place
Build segments and cohorts that matter
Group by brand, interest, activity, or lifecycle and track performance over time.
Track the signals that boost engagement
Focus on churn, inbox health, and true engagement to know how to grow.
Sync clean data to your stack
Simplify your data workflows with APIs and exports that play nicely with your ESP, CDP, or BI tools.
Intel that powers optimal
content creation
Know what to make next. Letterhead highlights the topics, formats, and audiences that win, so editors can plan smarter, create faster, and publish with confidence.
Identify winning topics
Test subjects, get direct audience feedback and learn what drives engagement.
Be strategic about timing
Ensure your newsletters send at the right time, every time via automations.
Build segment-ready briefs
Turn cohorts into clear targets with size, recent behavior, and example stories editors can use.
Get feedback where it counts
Easy-to-use polls and surveys give you direct reader feedback to test and adapt your plan.

Tie insights to action in the same platform
Letterhead closes the gap between knowing and doing. Share insights and allow teams to act on data in real time without switching tools or losing momentum.
- Send targeted editions to high-value segments
- Leverage your data for advertising, sponsorship and marketing impact
- Keep teams aligned with unified insights in one shared platform
- Automatically trigger welcome and re-engagement workflows
