Fast Transactional Email API

Send password resets, OTP codes & notifications in seconds. Privacy-first, EU-hosted, carbon neutral. Trusted by 2,000+ developers.

$ curl
MailPace is the transactional email provider you've been searching for

Quick Facts About MailPace

Everything you need to know about our transactional email service

⚑ Average Delivery Time

1.19 seconds

Gmail average delivery time. We measure and publish real-time metrics.

πŸ“§ Emails Delivered

200+ Million

Successfully delivered since 2021.

🌍 Data Location

EU Only

100% European Union hosted with carbon-neutral infrastructure.

πŸ’° Starting Price

Under $4/month

1000 emails/month for under $4/month. Scaling plans from $10/month (10,000+ emails).

πŸ”§ Integration Time

5 Minutes

Simple HTTP API or SMTP. No complex setup required.

πŸ›‘οΈ Privacy Focused

No Tracking

We never track email opens or clicks. GDPR compliant by design.

Technical Specifications

  • API Type: RESTful HTTP API with JSON payloads
  • Authentication: Server token-based authentication
  • Supported Protocols: HTTP API, SMTP (port 587, TLS required)
  • Max Email Size: 25MB including attachments
  • Languages Supported: Node.js, Ruby, Python, PHP, Go, Elixir, curl
  • Frameworks: Rails, Symfony, Laravel, Express, and more
  • Webhooks: Real-time delivery status, bounces, and complaints
  • Email Validation: DKIM, SPF, DMARC fully supported
  • Idempotency: Safe retry mechanism with idempotency keys
  • Inbound Email: Convert incoming emails to JSON webhooks

Common Use Cases

πŸ” Password Resets

Instant password reset emails with secure tokens

πŸ“± OTP & 2FA Codes

Time-sensitive one-time passwords and authentication codes

πŸ‘‹ Welcome Emails

User onboarding and account activation emails

πŸ“¦ Order Confirmations

E-commerce order receipts and shipping notifications

πŸ”” System Alerts

Application notifications and monitoring alerts

βœ… Email Verification

Account verification and email confirmation links

How MailPace Compares

FeatureMailPaceSendGridPostmarkMailgun
Avg. Delivery Time1.19s~2-5s~1-3s~3-7s
Email TrackingNone (by design!)YesYesYes
EU Hostedβœ“βœ—βœ—βœ—
Carbon Neutralβœ“βœ—βœ—βœ—
Free Tier100/mo100/day100/mo5,000/mo
Starting Price$4/mo$15/mo$15/mo$35/mo

We are speedy fast πŸš…

And we share our performance metrics to prove it

We measure, track and optimize for time to inbox. We publish live results for all to see to hold ourselves accountable to our fast transactional email delivery times.

Latest Time to Inbox Timings

Gmail

4.71s

Avg: 6.12s

iCloud

2.69s

Avg: 3.06s

Yahoo

15.66s

Avg: 11.23s

Integrate in minutes

MailPace supports all your favourite languages and has integrations for popular frameworks

Terminal window
# Copy and paste into the terminal to send an email using curl
curl "https://app.mailpace.com/api/v1/send" \
-X POST \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
-H "MailPace-Server-Token: API_TOKEN_GOES_HERE" \
-d '{
"from": "example@domain.com",
"to": "person@somewhere.com",
"subject": "Hello from MailPace.com",
"textbody": "Hello"
}'

We have everything you need to send and receive transactional emails

Features

HTTP API

Integrate anywhere with our rapid HTTP API for efficient and reliable email delivery.

SMTP Endpoint

Utilize our SMTP endpoint to send directly from any SMTP supported application or service

Inbound Email

Receive and turn inbound emails into JSON webhooks effortlessly with our inbound email service.

Webhooks

Stay updated with real-time notifications using our powerful webhooks.

DKIM, SPF & DMARC

Send with confidence with support for custom Return-Path and full DMARC support.

Automatic Email Optimization

Emails sent through MailPace are compressed and rebuilt for deliverability and speed.

Spam Protection with Automated Blocklist Management

Protect your domain reputation and maximise deliverability with our outbound spam protection and automated bounce management.

Idempotent API

Ensure safe and repeatable sending with our idempotent request handling.

What makes MailPace different

Why we are what you need

Transactional only

MailPace can only be used for Transactional Email - think password resets, notifications and welcome emails. We don't mix them up with slow, bulk marketing emails like other providers.

A real email provider

We're not just an API layer to another email service. We run our own SMTP servers, the way email was designed

Engineer lead support

We don't do helpdesks, NPS scores and clueless support scripts. Email us anytime and an engineer will get back within a few hours: support@mailpace.com

Fully Independent

We're not owned by a billionaire, we're an independent company helping to get Transactional Emails to inboxes for our customers

Developer First

Our API and interface is super simple & easy to use, and we have code libraries and integrations for most frameworks ready to go

No Read Tracking

We refuse to invade a person's privacy. Unlike other transactional email providers, we don’t support spy pixels or click tracking

We HATE spam

We have a five-layer approach to ensuring that our service is never used for spam. Keeping your reputation high and getting your emails to inboxes

Fast!

Our Transactional Emails arrive in seconds, and we continuously monitor and optimize our time to inbox scores to get emails to inboxes fast!

Eco-Friendly

We use 100% carbon-neutral, renewable energy powered servers. Our servers are provided by local bare-metal & VPS providers, not massive cloud companies

Eco-Friendly, European-Focused, Privacy First.

Carbon Neutral Infrastructure

Our email infrastructure runs on 100% carbon-neutral, renewable energy powered servers

Local, European Providers

We use small, local providers for hosting, with all data hosted in the EU.

We put privacy first

No read tracking - we only check if the receiving server accepted the email, we never invade a person's inbox privacy.

Anti-Spam

No spam - we enforce DKIM validation, actively remove spammers and automatically check all outbound emails for spam.

FAQs

Frequently Asked Questions

Can I include open/read tracking?

We do not support this, however if you want to include one and track users yourself, you can manually. Note that in order to be GDPR compliant you must get the user to opt-in to tracking first.

Can I send Marketing Emails with MailPace?

No. Only Transactional Emails are supported. For a complete definition of what a Transactional Email is, see what are transactional emails.

Do you support my code library or framework?

Probably! If you can't find what you need in our Docs, reach out to us at support@mailpace.com.

I need to send more than 1.5 million emails/month

Contact us at support@mailpace.com for a bespoke quote.

Can I pay with Crypto?

No, only payments supported by our payment provider Paddle.com are supported.

Can you add my new feature idea?

Sure! Drop us an email at support@mailpace.com and we'll see what we can do.

2021
Founded
200m+
Emails Sent
2k+
Senders

Ready to send?