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Mailsac

Disposable Email

Open documentation ↗
API keyHTTPSCORSTest Data

Verified 4 days ago: 100% uptime

API key

Required

HTTPS

Supported

Browser calls

Yes, CORS enabled

Status

Live · 100/100

What our checks found

Health score
100/100
Reliability
100%
Average latency
369ms

Last checked 2026-09-18. Measured independently, not self-reported by the provider.

How to call it

A starting template for Mailsac. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.

# Requires an API key. Check the docs for whether it goes in a header or a query parameter.
curl -s "https://mailsac.com/ENDPOINT" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json"

Where this listing comes from

Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.

Other Test Data APIs

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DummyJSON

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Fake REST API with products, users, posts, comments, todos and more

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Verified 4 days ago: 100% uptime

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FakeNamely

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Fictional identities, addresses and names for tests

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Verified 4 days ago: 100% uptime

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RoboHash

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Generate random robot/alien avatars

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Sampuli

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Format-true synthetic test data for 90 countries: IDs, IBANs, cards, addresses

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Waldrand Avatar

Test Data

Deterministic SVG/PNG/WebP avatars from any string, four styles

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

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Mailsac — common questions

Answered from what our own scheduled checks found, not from the provider's marketing.

Is Mailsac free to use?

Mailsac is listed in our free catalogue, but it requires an API key, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.

Does Mailsac need an API key?

Yes. Mailsac authenticates with an API key. Keep it server-side rather than in browser code, because anything in your frontend bundle is readable by anyone who opens developer tools.

Can I call Mailsac from browser JavaScript?

Yes. Mailsac returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.

Is Mailsac still working?

Yes, as of 2026-09-18. Our automated check reached Mailsac and recorded a 100% reliability score with a median response time of 369 ms. We re-check on a schedule, and this page updates with the result.

Is Mailsac available over HTTPS?

Yes. Mailsac serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.