Integration · Letterhead + Zephyr
Letterhead + Zephyr
Connect Zephyr to Letterhead Suite. Your subscriber and content data sync into the newsletter, so editions reflect what your audience subscribes to and reads.
Better with Zephyr
Your Zephyr data, in every edition.
Zephyr manages your subscribers and content; Letterhead turns that data into smarter newsletters.
Subscriber sync
Zephyr subscriber records map to newsletter audiences.
Content in, automatically
Pull Zephyr content into editions without re-keying.
Engagement back
Newsletter engagement flows back to your Zephyr records.
How they work together
Zephyr and Letterhead, each doing what it does best.
Keep Zephyr as your system of record. Letterhead reads subscribers and content from it and writes engagement back — in sync.
What Zephyr handles
- Subscriber and circulation records.
- Your published content.
- Account and entitlement data.
- Source-of-truth audience data.
What Letterhead adds
- Newsletters built on Zephyr audiences.
- Zephyr content pulled into editions.
- Reader engagement synced back.
- Revenue ops on your owned audience.
What customers say
See your Zephyr data in the newsletter.
Bring your Zephyr setup and a newsletter you want to run. We'll show you the data and content flowing in.


