Email
apiKeyHTTPSCORS ?
Email
Unitpost API
Not rated yet · Be the first to rate itSend transactional email, campaigns and SMS; free for 5,000 emails a month.
Unitpost API is a free Email API that requires apiKey authentication, is served over HTTPS and does not support CORS, so it should be called from a server.
- Authentication
- apiKey
- HTTPS
- Yes
- CORS
- No
- Category
- Uptime (30 days)
- Up
Visit documentation ↗www.unitpost.com
Online · 2737 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime
About Unitpost
Reference for the Unitpost Email API: send, schedule and cancel email, domains, templates, campaigns, topics and tracking, with examples for every SDK.
- Provider
- Unitpost
- Website
- unitpost.com ↗
Details from unitpost.com.
Key facts
- HTTPS
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Unitpost API FAQ
Who provides the Unitpost API?
The Unitpost API is provided by Unitpost (unitpost.com). Reference for the Unitpost Email API: send, schedule and cancel email, domains, templates, campaigns, topics and tracking, with examples for every SDK.
Is the Unitpost API free?
Yes. The Unitpost API is listed in the Email category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Does the Unitpost API require an API key?
Yes. The Unitpost API uses apiKey authentication, so you need to register for credentials before making requests.
Can I call the Unitpost API from the browser?
Not directly. The Unitpost API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Does the Unitpost API support HTTPS?
Yes. The Unitpost API is served over HTTPS, so it's safe to use in production.
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Show that Unitpost is listed on Public APIs. The badge displays its developer rating once it has one.
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