The email platform
built for SaaS
Build every email in one drag-and-drop editor. Send transactional via API, marketing via campaigns. One platform, one bill.
3,000 emails/month free. No credit card required.
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Your trial is live!
Hi {{first_name}}, thanks for signing up. You have 14 days to explore everything.
Devs integrate. Teams create.
A clean API that developers enjoy, connected to a visual editor your whole team can use independently. Nobody files a ticket to change a button color.
Your team edits. No dev tickets required.
A full visual editor your marketing and product team can use independently.
Integrate in minutes.
Forget about it forever.
Everything you need to send emails from your SaaS. Nothing you don't.
- 01 Integrate
Clean REST API + SMTP
Send your first email with a single API call. Or swap your SMTP credentials and keep your existing setup — no code changes needed.
- 02 Install
SDKs for every language
First-class Laravel package with one-command install. Official SDKs for PHP, Node.js, Go, Java, and Rust — all typed and documented.
- 03 Authenticate
SPF, DKIM, DMARC
Step-by-step DNS wizard walks you through authentication in minutes. Custom tracking domains included on every plan — no CNAME guesswork.
- 04 Send
Transactional and marketing, together
Stop splitting transactional and marketing across two vendors. Send both from one platform — built in the same editor, with one place to monitor it all.
- 05 React
Webhooks for every event
Get notified the moment an email is delivered, opened, clicked, or bounced. Build automations, sync with your database, or trigger in-app flows.
- 06 Debug
Searchable logs
Full-text search across every email you have sent. Filter by recipient, status, or tag. Find exactly why that one email bounced — in seconds, not hours.
Built for the emails SaaS companies actually send.
Designed for the emails your product already sends.
Onboarding sequences
Welcome to Looplex, Sarah
Password resets & security
Your login code: 284-391
Trial expiry & upgrade nudges
3 days left in your trial
Usage alerts & billing
You've hit 80% of your plan
Product updates & changelogs
What's new in Pilot — April
Feature announcements
Introducing AI commands (Pro)
Every email you send. One platform.
Product launches, newsletters, promos — run them all from the account you already use for transactional.
The editor 40,000+ teams trust
Powered by Topol. Drag, drop, ship — your team launches campaigns in minutes, no dev tickets and no Figma exports required.
Contacts, lists & segments
Sync contacts straight from your product. Segment by plan, activity, or any property — and reach exactly the right people every time.
Unlimited campaigns
Pay for the size of your audience — not the volume. Schedule and send as many campaigns as you need.
Inbox-ready deliverability
SPF, DKIM, and DMARC handled for you, with reputation monitoring and warm-up — so every campaign lands in the inbox. Real-time logs, unified analytics.
Your team builds. Engineering keeps shipping.
Marketers launch campaigns in the visual editor while your transactional stack stays untouched. Add Campaigns to your account in minutes — and watch every send land in the inbox.
Need help deciding?
Talk to our team about your email infrastructure, volume needs, or migration from another provider.
Talk to an expertSimple, usage-based
pricing.
Both products start free. Transactional bills per email, Marketing bills per contact — bundle them for a discount.
Transactional
Pay per email3,000 emails every month, free. Scale up from $15/mo.
- Email API & SMTP
- No daily limit on paid plans
- Real-time webhooks
Marketing
Pay per contactUp to 500 contacts, free. Scale up from $10/mo.
- Unlimited campaigns
- Drag-and-drop editor
- Lists & segments
Frequently asked questions
Common questions about Lettr's email platform for SaaS companies.