Mailosaur

Mailosaur Analysis API

Operations for analyzing the content and deliverability of an email, including SpamAssassin scoring and per-provider deliverability reports.

Documentation GitHub OpenAPI

Business capability

Software Quality Engineering BC-4200.50

Operations 2

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /api/analysis/spam/{messageId} Check a test email for spam · Perform spam analysis #

Ask an LLM

“Will my email be flagged as spam by filters?”

“Can I run a spam check on an email that landed in my Mailosaur inbox?”

Tell an agent

Run a spam analysis on message {messageId}.

Check whether email {messageId} looks like spam and show me the score.

GET /api/analysis/deliverability/{messageId} Get a deliverability report for an email · Perform deliverability analysis #

Ask an LLM

“How can I tell if my email will actually reach recipients' inboxes?”

“Is there a deliverability report for a captured test email?”

Tell an agent

Generate a deliverability report for message {messageId}.

Show me what could stop email {messageId} from being delivered.

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Mailosaur Analysis 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.
  version: 1.0.0
  contact:
    name: Mailosaur Support
    url: https://mailosaur.com/docs/api
  termsOfService: https://mailosaur.com/terms
  license:
    name: Commercial
    url: https://mailosaur.com/terms
servers:
- url: https://mailosaur.com
  description: Mailosaur production API
security:
- basicAuth: []
tags:
- name: Analysis
  description: Operations for analyzing the content and deliverability of an email, including SpamAssassin scoring and per-provider deliverability reports.
paths:
  /api/analysis/spam/{messageId}:
    get:
      operationId: getSpamAnalysis
      summary: Perform spam analysis
      description: Perform a spam analysis of an email.
      tags:
      - Analysis
      parameters:
      - $ref: '#/components/parameters/messageId'
      responses:
        '200':
          description: The spam analysis result.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SpamAnalysisResult'
  /api/analysis/deliverability/{messageId}:
    get:
      operationId: getDeliverabilityReport
      summary: Perform deliverability analysis
      description: Perform a deliverability report of an email.
      tags:
      - Analysis
      parameters:
      - $ref: '#/components/parameters/messageId'
      responses:
        '200':
          description: The deliverability report.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeliverabilityReport'
components:
  schemas:
    BlockListResult:
      type: object
      description: The result of checking against a blocklist.
      properties:
        id:
          type: string
          description: The blocklist identifier.
        name:
          type: string
          description: The name of the blocklist.
        result:
          type: string
          description: The blocklist check result (e.g. Listed, NotListed).
    SpamAnalysisResult:
      type: object
      description: The results of spam analysis performed by Mailosaur.
      properties:
        spamFilterResults:
          $ref: '#/components/schemas/SpamFilterResults'
        score:
          type: number
          format: float
          description: Overall Mailosaur spam score.
    SpamAssassinRule:
      type: object
      description: A single SpamAssassin rule result.
      properties:
        score:
          type: number
          format: float
          description: The score for this rule.
        rule:
          type: string
          description: The rule name.
        description:
          type: string
          description: The description of the rule.
    SpamAssassinResult:
      type: object
      description: The result of SpamAssassin analysis.
      properties:
        score:
          type: number
          format: float
          description: The SpamAssassin score.
        result:
          type: string
          description: The SpamAssassin result.
        rules:
          type: array
          description: Individual SpamAssassin rule results.
          items:
            $ref: '#/components/schemas/SpamAssassinRule'
    SpamFilterResults:
      type: object
      description: Spam filter analysis results.
      properties:
        spamAssassin:
          type: array
          description: SpamAssassin rule results.
          items:
            $ref: '#/components/schemas/SpamAssassinRule'
    DeliverabilityReport:
      type: object
      description: The results of a deliverability report performed by Mailosaur.
      properties:
        spf:
          $ref: '#/components/schemas/EmailAuthenticationResult'
        dkim:
          type: array
          description: The result(s) of checking for DKIM issues.
          items:
            $ref: '#/components/schemas/EmailAuthenticationResult'
        dmarc:
          $ref: '#/components/schemas/EmailAuthenticationResult'
        blockLists:
          type: array
          description: The result of each blocklist that was checked.
          items:
            $ref: '#/components/schemas/BlockListResult'
        content:
          $ref: '#/components/schemas/Content'
        dnsRecords:
          $ref: '#/components/schemas/DnsRecords'
        spamAssassin:
          $ref: '#/components/schemas/SpamAssassinResult'
    Content:
      type: object
      description: The result of content checks on the email.
      properties:
        embed:
          type: boolean
          description: Whether the email contains embedded content.
        iframe:
          type: boolean
          description: Whether the email contains iframes.
        object:
          type: boolean
          description: Whether the email contains object elements.
        script:
          type: boolean
          description: Whether the email contains script elements.
        shortUrls:
          type: boolean
          description: Whether the email contains short URLs.
        textSize:
          type: integer
          description: The size of the plain text content.
        totalSize:
          type: integer
          description: The total size of the email.
        missingAlt:
          type: boolean
          description: Whether any images are missing alt text.
        missingListUnsubscribe:
          type: boolean
          description: Whether the List-Unsubscribe header is missing.
    DnsRecords:
      type: object
      description: DNS record checks made against the sender's domain.
      properties:
        a:
          type: array
          description: A records.
          items:
            type: string
        mx:
          type: array
          description: MX records.
          items:
            type: string
        ptr:
          type: array
          description: PTR (reverse DNS) records.
          items:
            type: string
    EmailAuthenticationResult:
      type: object
      description: The result of an email authentication check (SPF, DKIM, or DMARC).
      properties:
        result:
          type: string
          description: The authentication result (e.g. Pass, Fail, None).
        description:
          type: string
          description: A description of the authentication result.
        rawValue:
          type: string
          description: The raw value of the authentication header.
        tags:
          type: object
          description: Key-value pairs of authentication tags.
          additionalProperties:
            type: string
  parameters:
    messageId:
      name: messageId
      in: path
      required: true
      description: The unique identifier of the message.
      schema:
        type: string
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Auth using your Mailosaur API key as the username and an empty password, or your API key as both username and password.