freeapis

Mailtrap

Email API and SMTP for sending transactional and bulk emails, with email testing sandbox for safe development

Authentication
API Key
HTTPS
Yes
CORS
Unknown
Category
Email
Documentation / URL
https://mailtrap.io

Overview

Mailtrap provides email sending/testing — key-based (a missing key returns 401, verified).

Quick Start

Accounts (replace YOUR_KEY):

curl "https://mailtrap.io/api/accounts" \
  -H "Authorization: Bearer YOUR_KEY"

Authentication

  • Register at mailtrap.io → API token.
  • Send it as Authorization: Bearer (missing → 401, verified).

Rate Limits & Notes

  • Free tier with limits (check the docs); paid plans scale.
  • Transactional email + sandbox.

FAQ

Is Mailtrap free? Free tier with limits; more is paid.

Why 401? An API token is required (verified).

What’s the auth style? Authorization: Bearer.

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