Every service email, one API call.
Receipts, password resets, verification links, notifications, the email your product has to send. Same branded templates, same verified domain, same deliverability as your marketing, on the same contact timeline.
Coming next. Transactional is the next pillar we're shipping. Start with Letter today, capture, sequences, and broadcasts are live now, and you'll be first in line when transactional lands.
Drop your transactional provider.
The same pipe that sends your lifecycle email handles the service messages too, no second vendor, no second integration.
One API call
letter.send() with a template and variables. No new
SDK, no new keys, it's the client you already installed.
Shared templates
The same branded template designer as your marketing email. Your receipts look like they came from your product, because they did.
Personalization
The same variables you use everywhere else, drop in a name, a plan, an amount, a reset link, and send.
Your domain, same delivery
Sends from your verified domain on the same deliverability infrastructure, so critical mail actually arrives.
Bypasses marketing opt-out
Service messages reach everyone, a password reset shouldn't depend on whether someone unsubscribed from your newsletter.
One timeline
Every transactional send lands on the contact's timeline next to their lifecycle and broadcast history. One view of every email.
The email your product must send.
Transactional email isn't optional, it's the receipt, the reset, the verification link a user is waiting on. One call covers all of it, with the reliability those moments demand.
- Account verification and welcome confirmations
- Password resets and magic links
- Billing receipts and invoices
- Usage alerts and product notifications
Marketing and service, one view.
With a separate transactional provider, half a contact's email history lives somewhere you never look. In Letter, the receipt sits right under the onboarding drip and the last broadcast, the whole relationship in one place.
The rest of the pipe.
Every pillar shares the same contacts, templates, and sending infrastructure. Here's what pairs with this one.
One integration.
Every email.
Free up to 1,000 contacts. No credit card. Capture a lead, fire an event, watch it arrive.