Integration · Letterhead + OptinMonster
Letterhead + OptinMonster
Connect OptinMonster to Letterhead via Zapier. Every lead your popups and optin campaigns capture is added to your newsletter audience automatically.
Better with OptinMonster
The conversion tool and the newsletter, finally on speaking terms.
OptinMonster wins the signup. Zapier moves it. Letterhead turns it into a reader relationship.
Every lead lands
Popups, floating bars, and gamified campaigns all feed one Letterhead audience.
No sync lag
Leads arrive as they convert — your welcome content reaches them while interest is hot.
One list of record
Stop reconciling optin exports against your newsletter list.
Set it up with Zapier
Live in minutes. No engineer required.
Letterhead is on Zapier, so connecting OptinMonster is a standard Zap — start from the OptinMonster + Letterhead page and follow the prompts. Prefer no middleman? Letterhead’s API and MCP server connect directly.
1. Connect both apps
In Zapier, connect your OptinMonster and Letterhead accounts. No code — a couple of minutes, once.
2. Pick the trigger
Choose OptinMonster’s “New Lead” trigger on the campaigns that collect signups.
3. Point it at Letterhead
Add Letterhead’s contact action so every captured lead becomes a subscriber automatically.
How they work together
OptinMonster and Letterhead, each doing what it does best.
Keep OptinMonster where it’s strong. Zapier carries the data over, and Letterhead runs the newsletter on top — no code, no rip-and-replace.
What OptinMonster handles
- Popups, slide-ins, floating bars, and spin-to-win.
- Exit-intent and behavioral targeting.
- A/B testing on optin campaigns.
- Conversion analytics.
What Letterhead adds
- Captured leads added straight to your audience.
- The newsletter those leads signed up for — produced and sent.
- Segments, list health, and engagement tracking.
- Revenue ops on the audience you're growing.
FAQ
Connecting OptinMonster and Letterhead
How do I connect OptinMonster to Letterhead?
Through Zapier. Connect both accounts, pick your OptinMonster trigger, and add Letterhead as the action — the OptinMonster + Letterhead page on Zapier walks you through it. Most teams are live in under ten minutes.
What does the OptinMonster + Letterhead Zap actually do?
Choose OptinMonster’s “New Lead” trigger on the campaigns that collect signups. Add Letterhead’s contact action so every captured lead becomes a subscriber automatically. From then on it runs automatically, every time.
Is there a native OptinMonster integration?
The OptinMonster connection runs through Zapier today, which covers the common workflow well. For a direct connection, Letterhead’s API and MCP server are available — and we build custom integrations, usually in days.
Do I need a developer to set this up?
No. The Zap is point-and-click in Zapier’s editor. If you can fill out a form, you can connect OptinMonster to Letterhead.
What if we’re consolidating tools or moving off OptinMonster?
Letterhead works either way — keep OptinMonster running alongside your newsletter, or book a test drive and bring your stack; we’ll map what a consolidated setup would look like.
What customers say
Letterhead has been an invaluable resource for us. Not only did it meet our budget needs, but it also enabled us to create personalized, creative newsletters that made our brand stand out. Their flexible platform allowed us to grow and adapt as our subscriber list and needs changed.
Jessica FordDirector, Startup Digest, TechstarsIt’s made newsletter advertising cleaner, more consistent, and far less time-consuming. Thanks to Letterhead, our newsletters have become the cornerstone of our strategy.
Danielle HastingsVP of OperationsWe at the Patch local news network have worked with Letterhead to create a critical monetization engine. They’ve been the best kind of partner — striving to understand our needs, quick to respond, and building for the future. Couldn’t have done it without them!
Simone WilsonSenior Manager, Patch.comYour popups are working. Put the leads to work too.
Open the Zapier setup and wire OptinMonster into Letterhead — or book a test drive and see the whole capture-to-newsletter loop.