Swiss transactional email APISwiss-made · Hosted in Switzerland

Transactional email,
shipped this afternoon.

Send transactional email with one REST call — raw HTML or a reusable multilingual template, your choice. Allowlisted Reply-To, real-time tracking and inbox-grade delivery come standard. No SMTP plumbing, no deliverability guesswork.

Trusted for receipts, password resets and order confirmations — the email your customers actually open.

api.mailq.cloud — curl
POST /v1/emails
Authorization: Bearer mq_live_••••7af2
{
"replyTo": "[email protected]",
"subject": "Your order is confirmed",
"htmlBody": "<h1>Thanks, Alex!</h1>"
}
// or reference a template by slug — optional
202 ACCEPTEDqueued in 38ms
{ "id": "msg_8fa2c1", "status": "queued" }
99.9%
Inbox delivery
<100ms
API response
5 min
To first send
100%
Swiss-hosted

Sending for product, fintech and e-commerce teams

REST APISMTP.NET SDKWebhooksDKIM / SPFLiquidOAuth 2.1Inbound routingREST APISMTP.NET SDKWebhooksDKIM / SPFLiquidOAuth 2.1Inbound routing
01The problem

Transactional email breaks at the worst possible moment

The receipt that never arrives. The password reset stuck in spam. The provider that quietly moves your data offshore. Transactional email is the most important mail you send — and the easiest to get wrong.

Deliverability you can't see

SPF, DKIM and reputation fail silently. You find out when a customer can't log in.

Plumbing instead of product

SMTP retries, bounce parsing and template engines eat the time you meant to spend shipping.

Compliance question marks

Where does your customer data actually live, and who can read it? Most providers won't say plainly.

02The platform

Everything from one REST call to the inbox

A complete transactional layer — authoring, sending, tracking and routing — behind a single, predictable API.

An API you'll enjoy

One endpoint, idempotency keys for safe retries, typed errors. Send raw HTML and text, or reference a template by slug — your call.

Visual multilingual templates

Build emails with drag-and-drop and Liquid. One template, per-language variants, reusable partials.

Real-time tracking

Opens, clicks, deliveries and bounces stream in live, with an HMAC-signed webhook for every event.

Inbox-grade deliverability

Automatic DKIM, SPF support and smart bounce handling protect your sender reputation.

Inbound routing

Receive replies and incoming mail, then route each message to a webhook or mailbox by rule.

Swiss by default

Built and operated in Switzerland. Your data stays on Swiss soil under the DSG.

portal.mailq.cloud
Overview
Last 30 days
Sent
184,920
+12.4%
Delivered
99.94%
+0.1%
Opened
61.2%
+3.8%
Clicked
24.7%
+1.2%
Send volume
Recent activity
[email protected]Delivered
[email protected]Opened
[email protected]Delivered
03How it works

Live in three steps

Most teams send their first production email the same afternoon they sign up.

01

Verify your domain

We generate DKIM keys and validate your DNS automatically. One-click setup, minutes not days.

02

Compose your email

Send raw HTML and text straight from your code, or design a reusable multilingual template in the visual editor — entirely optional.

03

Send with one call

POST to the API or point SMTP at MailQ. Watch every open, click and delivery roll in.

Your app
POST /v1/send
MailQ
render & queue
Inbox
delivered
request → render → deliver · avg <100ms to queue
04Built for both sides of the table

Developers love it. Management signs off on it.

The same platform that makes engineers fast is the one that makes a procurement review easy.

For developers

  • One predictable REST endpoint with idempotency keys and typed errors
  • Official .NET SDK, sandbox mode and copy-paste examples
  • HMAC-signed webhooks for every lifecycle event — no polling
  • Scoped API keys and a full audit trail from day one

For teams & management

  • Swiss data residency and DSG compliance, in writing
  • 99.9% delivery and a 99.9% uptime SLA on Professional
  • Predictable pricing with no surprise per-email penalties
  • Audit logs and access control your security team will approve
05Use cases

Every critical email, one reliable API

From the welcome message to the receipt, MailQ delivers the moments that matter.

Order confirmations

Confirm purchases the instant they happen, with full delivery proof.

Password resets & auth

Verification codes and security alerts that land in seconds, not spam.

Receipts & invoices

Itemised receipts with PDF attachments, ready for accounting and returns.

Welcome & onboarding

Template-driven welcomes with per-locale variants and engagement tracking.

Shipping & status updates

Tracking numbers and delivery estimates at every step of the journey.

Billing notifications

Statements, renewals and payment confirmations, delivered on time.

Ready to send your first email?

Go from signup to live send in an afternoon. No credit card required.

  • Quick setup
  • Visual editor
  • Swiss-hosted