Mailosaur

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.

1 APIs 0 Features

Email TestingSMS TestingDeveloper ToolsQA AutomationCI/CDSMTPTOTPDeliverability

APIs

Mailosaur API

REST API for email and SMS testing. Provides endpoints for managing test inboxes (servers), retrieving and searching messages, running deliverability checks, generating OTPs for...

Pricing Plans

Mailosaur Plans Pricing

3 plans

PLANS

Rate Limits

Mailosaur Rate Limits

0 limits

RATE LIMITS

FinOps

Mailosaur Finops

FINOPS

Semantic Vocabularies

Mailosaur Context

38 classes · 7 properties

JSON-LD

Example Payloads

Mailosaur Create Server Example

3 fields

EXAMPLE

Mailosaur Deliverability Report Example

3 fields

EXAMPLE

Mailosaur Get Otp Example

3 fields

EXAMPLE

Mailosaur Search Messages Example

3 fields

EXAMPLE

Resources

Sources

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-images.s3.amazonaws.com/shared/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-images.s3.amazonaws.com/shared/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