aid: mailosaur
name: Mailosaur
description: >-
  Mailosaur is an email and SMS testing platform for developers and QA teams.
  It provides a REST API for creating test inboxes, capturing and retrieving
  messages, running assertions, performing deliverability analysis, and
  integrating email and SMS testing into CI/CD pipelines. The platform supports
  authentication testing (TOTP/2FA), spam analysis, SPF/DKIM/DMARC validation,
  and connects via SMTP, POP3, and IMAP protocols.
type: Index
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/mailosaur/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: "0.19"
tags:
  - Email Testing
  - SMS Testing
  - Developer Tools
  - QA Automation
  - CI/CD
  - SMTP
  - TOTP
  - Deliverability
apis:
  - aid: mailosaur:mailosaur-api
    name: Mailosaur API
    description: >-
      REST API for email and SMS testing. Provides endpoints for managing test
      inboxes (servers), retrieving and searching messages, running deliverability
      checks, generating OTPs for authenticator testing, and accessing account
      usage data. All requests authenticate via HTTP Basic Auth using an API key.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://mailosaur.com/docs/api
    baseURL: https://mailosaur.com/api
    tags:
      - Email
      - SMS
      - Testing
      - REST API
    properties:
      - type: Documentation
        url: https://mailosaur.com/docs/api
      - type: PostmanCollection
        url: https://www.postman.com/mailosaur/mailosaur/documentation/6961255-6cc72dff-f576-451a-9023-b82dec84f95d
      - type: OpenAPI
        url: openapi/mailosaur-mailosaur-api-openapi.yml
common:
  - type: Website
    url: https://mailosaur.com
  - type: Documentation
    url: https://mailosaur.com/docs
  - type: GitHubOrg
    url: https://github.com/mailosaur
  - type: LinkedIn
    url: https://www.linkedin.com/company/mailosaur
  - type: X
    url: https://x.com/mailosaur
  - type: Blog
    url: https://mailosaur.com/blog
  - type: Pricing
    url: https://mailosaur.com/pricing
  - type: StatusPage
    url: https://status.mailosaur.com
  - type: Plans
    url: plans/mailosaur-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/mailosaur-rate-limits.yml
  - type: FinOps
    url: finops/mailosaur-finops.yml
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com