for SaaS products
Transactional email your users can trust
OTPs that arrive in seconds, receipts that reconcile, lifecycle nudges that know when to stop. Wire it once over the API and watch every send in the ledger.
Waybill
MT-8D7E · 3309…26BB
POST /api/v1/emails/send → 200 · 41ms
the jobs
One counter, every job.
Each of these rides the same API and lands in the same ledger, so what your team sends and what your code sends never disagree.
01
Auth and one-time passwords
Send a templated code in one POST and trace it by reference if a user says it never arrived. Delivery is a fact you can check, not a hope.
Waybill
MT-8D7E · 3309…26BB
POST /api/v1/emails/send → 200 · 41ms
02
Receipts and invoices
Billing events become clean, on-brand receipts built in blocks. The numbers on the email reconcile with the numbers in your database.
03
Lifecycle without cron jobs
Onboarding and re-engagement run as sequences on a rail. Branch on whether the user activated, and stop sending when they do.
Welcome aboard
sent immediately
Wait 2 days
then continue
Getting started tips
template · onboarding-02
Opened the last email?
yes → tips · no → nudge
A hand if you need it
template · onboarding-nudge
outcomes
What changes at the counter.
What the bureau does for SaaS, in plain terms and nothing more.
- One API for OTPs, receipts and lifecycle
- Every send traceable by reference
- Suppression handled so reputation stays intact
live demo
Try it at the counter.
No signup and no sandbox keys. This is the real interaction, running right here on the page.
curl -X POST https://api.mailtrooper.com/api/v1/emails/send \
-H "Authorization: Bearer $MAILTROOPER_KEY" \
-d '{
"to_email": "ria@example.com",
"template": "shipped-tracking",
"data": { "first_name": "Ria", "tracking": "MT-8D7E" }
}'press run to dispatch a test email and trace it
Questions at the counter
How fast are OTP sends?+
A send is one POST that returns a reference in tens of milliseconds; the email is on the wire immediately after. You trace delivery in the ledger.
Is the dashboard available over the API?+
Everything the dashboard shows rides the same API, so your app can read the ledger and aggregates directly.
Give SaaS the bureau.
Free plan, full API, all 85 templates. No card at the counter. The dispatch bureau for transactional email.