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
Data source
public-apis
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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