MailPace
MailPace: A focused transactional email service with API, SMTP, inbound webhooks, and delivery tracking. Ranked #32 of 32 in Email APIs by our editors (5.0/10); pricing: Paid; best for developers wanting simple transactional delivery.
At a glance
- Editor score5.0 / 10
- PricingPaid
- Best forDevelopers wanting simple transactional delivery
- Inbound emailYes
- Founded2021
- Facts checked16 Sep 2026
Where it wins
- Supports HTTPS API, SMTP sending, and inbound email webhooks
- Includes delivery, bounce, spam, and deferred event webhooks
- Offers libraries and integrations for nine languages or frameworks
Where it doesn't
- Marketing and bulk newsletter sending are prohibited
- No dedicated IP option is provided
- The listed plan covers 10,000 sent or received emails monthly
Our verdict on MailPace
MailPace is a transactional email delivery service for developers and application teams sending password resets, notifications, welcome emails, and similar application messages. It combines an HTTPS transactional email API with an SMTP sending server, inbound email processing, domain verification, delivery-status tracking, bounce management, and client libraries. The service is operated by OhMySMTP Ltd and hosted in the European Union. Its stated focus is application email rather than marketing campaigns or bulk newsletters.
For integration work, MailPace offers a practical developer-oriented surface. Teams can send through the API or SMTP, receive inbound messages as JSON webhooks, and subscribe to delivery, deferred, bounce, and spam events. DKIM domain verification is supported, with optional SPF and DMARC configuration. Automated bounce and blocklist management, acceptance tracking, email tagging, and idempotent API requests address common delivery and application-flow requirements. Listed libraries and framework integrations cover cURL, Node.js, Ruby, PHP, Go, Python, Rails, Symfony, and Elixir, giving teams several established implementation paths.
The published plans show a paid model with a 10,000 emails option that includes the first 10,000 sent or received emails per month. MailPace is a good fit for developers who want transactional delivery through familiar API or SMTP workflows, especially when inbound processing and event webhooks matter. It is less suitable for teams looking for campaign or newsletter functionality, since marketing and bulk newsletter sending are prohibited. Organizations that require dedicated IP support should also consider another service. Overall, MailPace keeps its scope narrow: application messaging, delivery signals, and developer integration rather than a broader email marketing platform.
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MailPace pricing
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MailPace fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Not verified |
| Monthly send limit | Not verified |
| Inbound email | Yes |
| Delivery event webhooks | Yes |
| SMTP relay | Yes |
| Email templates | Not verified |
| Dedicated IP option | No |
| Deployment | Cloud |
| Platforms | Web |
| Integrations | 9 integrations: cURL, Node.js, Ruby, PHP, Go, Python … |
| Pricing | Paid (source) |
| Website | mailpace.com |
| Facts checked | 16 Sep 2026 |
MailPace integrations
MailPace lists 9 integrations on its own site.
- cURL
- Node.js
- Ruby
- PHP
- Go
- Python
- Rails
- Symfony
- Elixir
Alternatives to MailPace
- MailgunA mature email API with broad sending, inbound routing, tracking, and deliverability tools.9.7
- Twilio SendGrid Email APIA mature email API with broad developer features, but no ongoing free plan.9.3
- MailjetA broad email platform combining APIs, automation, campaigns, and collaboration.9.1
See all MailPace alternatives →
Also Ranked In
MailPace is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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