{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"awesome-mailtrap","slug":"mailtrap","name":"Mailtrap","type":"mcp","url":"https://github.com/railsware/mailtrap-mcp","page_url":"https://unfragile.ai/mailtrap","categories":["mcp-servers"],"tags":[],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"awesome-mailtrap__cap_0","uri":"capability://tool.use.integration.email.sandbox.inbox.management.via.mcp.protocol","name":"email sandbox inbox management via mcp protocol","description":"Exposes Mailtrap's email sandbox API through the Model Context Protocol, enabling LLM agents and tools to programmatically query, filter, and retrieve test emails from isolated inbox environments. Implements MCP resource and tool abstractions that map directly to Mailtrap REST endpoints, allowing stateless access to email metadata, headers, and body content without managing HTTP clients directly.","intents":["Query test emails from a sandbox inbox to verify email delivery in automated testing workflows","Retrieve email content and metadata for assertion-based email testing in CI/CD pipelines","Filter and search emails by recipient, subject, or timestamp to validate transactional email behavior","Integrate email testing capabilities into LLM-powered agents that need to verify email-dependent features"],"best_for":["QA engineers automating email verification in test suites","Backend developers building email-dependent features who want LLM-assisted testing","Teams using Claude or other MCP-compatible LLMs for end-to-end testing automation"],"limitations":["Read-only access to sandbox inboxes — cannot send emails directly through MCP (requires separate Mailtrap Send API)","No built-in email parsing or HTML rendering — returns raw MIME content that requires client-side processing","Sandbox isolation means no access to production email data; testing limited to pre-configured test inboxes","MCP protocol overhead adds ~50-100ms per request compared to direct REST API calls"],"requires":["Mailtrap account with API token (available in account settings)","MCP-compatible client (Claude Desktop, LLM framework with MCP support, or custom MCP host)","At least one configured sandbox inbox in Mailtrap","Network access to Mailtrap API endpoints (api.mailtrap.io)"],"input_types":["inbox_id (integer)","email_id (integer)","query filters (recipient, subject, timestamp range)","pagination parameters (limit, offset)"],"output_types":["structured JSON with email metadata (id, from, to, subject, received_at)","raw email body (text/plain or text/html MIME content)","email headers as key-value pairs","attachment metadata (filename, size, content-type)"],"categories":["tool-use-integration","email-testing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_1","uri":"capability://tool.use.integration.mailtrap.api.authentication.and.credential.management","name":"mailtrap api authentication and credential management","description":"Handles secure storage and injection of Mailtrap API credentials into MCP tool calls through environment variable or configuration-based authentication. Implements credential validation at initialization time to fail fast if API tokens are invalid, and transparently attaches authentication headers to all downstream Mailtrap API requests without exposing credentials in logs or tool outputs.","intents":["Configure MCP server with Mailtrap API credentials securely without hardcoding tokens","Validate API token validity before attempting email queries to catch configuration errors early","Automatically inject authentication headers into all Mailtrap API calls without manual header management"],"best_for":["DevOps engineers setting up MCP servers in containerized or cloud environments","Teams managing multiple Mailtrap accounts and needing credential isolation per environment"],"limitations":["Credentials must be provided at server startup — no runtime credential rotation without server restart","No built-in credential caching or refresh token support; relies on static API tokens that don't expire","Environment variable approach requires careful secret management in CI/CD — no native integration with secret managers (Vault, AWS Secrets Manager)"],"requires":["Mailtrap API token (generated in account settings)","Environment variable MAILTRAP_API_TOKEN or equivalent configuration mechanism","MCP server runtime with environment variable access"],"input_types":["API token (string)","optional: account ID or workspace identifier"],"output_types":["authentication validation result (success/failure)","implicit: authenticated HTTP headers attached to all downstream requests"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_2","uri":"capability://tool.use.integration.inbox.enumeration.and.metadata.retrieval","name":"inbox enumeration and metadata retrieval","description":"Discovers and lists all available sandbox inboxes associated with a Mailtrap account, returning inbox IDs, names, and configuration metadata. Implements pagination and filtering to handle accounts with many inboxes, and caches inbox list to reduce API calls for repeated queries. Enables agents to dynamically select target inboxes without hardcoding IDs.","intents":["List all available test inboxes to dynamically select which inbox to query for emails","Retrieve inbox metadata (name, email address, creation date) for logging and audit purposes","Discover inbox configuration (e.g., retention policies, forwarding rules) to understand sandbox behavior"],"best_for":["Multi-inbox testing scenarios where different test suites use different sandboxes","Automated testing frameworks that need to discover inboxes at runtime rather than hardcoding IDs"],"limitations":["No filtering by inbox type or status — returns all inboxes regardless of active/inactive state","Inbox list is cached per MCP session; new inboxes created after server startup won't appear until restart","No support for inbox creation or deletion through MCP — read-only enumeration"],"requires":["Valid Mailtrap API token with account-level read permissions","At least one sandbox inbox configured in Mailtrap account"],"input_types":["optional: pagination parameters (limit, offset)"],"output_types":["array of inbox objects with fields: id, name, email_address, created_at, updated_at, inbox_type"],"categories":["tool-use-integration","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_3","uri":"capability://search.retrieval.email.query.and.filtering.with.advanced.search","name":"email query and filtering with advanced search","description":"Provides structured query tools to search and filter emails within a sandbox inbox using criteria like recipient address, subject line, timestamp range, and read/unread status. Implements query parameter validation and pagination to handle inboxes with thousands of emails efficiently. Returns email summaries with metadata (ID, sender, recipient, subject, timestamp) enabling agents to identify target emails before fetching full content.","intents":["Find emails matching specific criteria (e.g., 'all emails to user@example.com sent in the last hour') to verify email delivery","Filter emails by subject pattern to locate password reset or confirmation emails in test flows","Paginate through large email lists to avoid loading entire inboxes into memory"],"best_for":["Test automation engineers building assertion-based email verification","Developers debugging email delivery issues by searching sandbox logs"],"limitations":["Search is limited to basic metadata fields (recipient, subject, timestamp) — no full-text body search","No regex or wildcard support in subject/recipient filters; only exact match or prefix matching","Pagination limited to 100 results per page; querying very large inboxes (10k+ emails) requires multiple API calls","No support for complex boolean queries (AND/OR combinations) — filters are applied sequentially"],"requires":["Valid inbox ID from inbox enumeration or hardcoded configuration","Mailtrap API token with inbox read permissions"],"input_types":["inbox_id (integer)","optional: recipient (email address string)","optional: subject (string, prefix match)","optional: from_timestamp, to_timestamp (ISO 8601 datetime)","optional: is_read (boolean)","optional: limit, offset (pagination)"],"output_types":["array of email summary objects with fields: id, from, to, subject, received_at, is_read, has_attachments"],"categories":["search-retrieval","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_4","uri":"capability://data.processing.analysis.email.content.retrieval.with.mime.parsing","name":"email content retrieval with mime parsing","description":"Fetches the complete email message (headers, body, attachments) for a specific email ID, returning raw MIME content or parsed JSON representation. Handles both text/plain and text/html email bodies, and provides attachment metadata (filename, size, MIME type) without downloading binary attachment data. Implements lazy loading to avoid fetching full email bodies until explicitly requested.","intents":["Retrieve the full email body to verify email content matches expected template or values","Extract email headers (Reply-To, X-Custom-Header) for validation in test assertions","List attachments and their metadata to verify email includes expected files without downloading them"],"best_for":["End-to-end test automation that needs to verify complete email content","Debugging email rendering issues by inspecting HTML body content"],"limitations":["Returns raw MIME content — requires client-side parsing to extract structured data (e.g., extract links from HTML)","Attachment binary data is not included in response; only metadata (filename, size) is returned","Large emails (>5MB) may timeout or be truncated; no streaming support for very large messages","HTML emails returned as raw HTML — no automatic rendering or link extraction"],"requires":["Valid email ID from email query results","Inbox ID where email resides","Mailtrap API token with email read permissions"],"input_types":["inbox_id (integer)","email_id (integer)","optional: format ('raw' for MIME, 'json' for parsed)"],"output_types":["raw MIME message (text/plain) or JSON object with fields: from, to, subject, headers (object), text_body, html_body, attachments (array of {filename, size, content_type})"],"categories":["data-processing-analysis","search-retrieval"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_5","uri":"capability://data.processing.analysis.email.attachment.metadata.inspection","name":"email attachment metadata inspection","description":"Extracts and returns metadata for all attachments in an email (filename, size in bytes, MIME content-type) without downloading binary attachment data. Enables agents to verify that emails include expected attachments and validate attachment properties (size, type) without consuming bandwidth or storage for large files.","intents":["Verify that an email includes expected attachments (e.g., invoice PDF, receipt image)","Validate attachment properties (filename, size, content-type) match expected values","Detect unexpected attachments or malformed attachment metadata"],"best_for":["Test automation for email workflows that include file attachments","Compliance testing to verify emails include required documentation"],"limitations":["Metadata-only — cannot inspect attachment content or validate file integrity","No support for nested attachments (e.g., ZIP files containing multiple files)","Attachment size limit depends on Mailtrap's email size limits (typically 25MB per email)"],"requires":["Valid email ID with attachments","Inbox ID where email resides"],"input_types":["inbox_id (integer)","email_id (integer)"],"output_types":["array of attachment objects with fields: filename, size (bytes), content_type, content_id (optional)"],"categories":["data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_6","uri":"capability://automation.workflow.email.state.management.mark.as.read.unread","name":"email state management (mark as read/unread)","description":"Updates email read/unread status in the sandbox inbox, enabling agents to track which emails have been processed or reviewed. Implements atomic state updates that persist in Mailtrap's database, allowing subsequent queries to filter by read status. Supports bulk operations to mark multiple emails as read in a single API call.","intents":["Mark emails as read after processing them to track test progress","Filter unread emails to identify new messages since last test run","Bulk mark emails as read to clean up inbox state between test runs"],"best_for":["Long-running test suites that need to track email processing state across multiple test runs","Agents that need to maintain inbox state without external databases"],"limitations":["Read/unread state is the only mutable email property — cannot modify subject, body, or other fields","No support for custom email flags or labels — only binary read/unread state","Bulk operations limited to ~100 emails per request; very large bulk updates require multiple API calls","State changes are not reversible without explicit API calls — no undo mechanism"],"requires":["Valid email ID(s) to update","Inbox ID where email resides","Mailtrap API token with write permissions on inbox"],"input_types":["inbox_id (integer)","email_id (integer) or email_ids (array of integers)","is_read (boolean)"],"output_types":["confirmation object with fields: updated_count (integer), success (boolean)"],"categories":["automation-workflow","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_7","uri":"capability://automation.workflow.inbox.cleanup.and.email.deletion","name":"inbox cleanup and email deletion","description":"Deletes individual emails or bulk-clears entire sandbox inboxes to reset test state between test runs. Implements safe deletion with optional confirmation to prevent accidental data loss. Supports selective deletion (by email ID) or full inbox purge, enabling agents to maintain clean test environments without manual Mailtrap UI interaction.","intents":["Delete specific emails after test assertions to clean up sandbox state","Purge entire inbox between test suites to ensure clean starting state","Remove old emails to manage inbox size and API query performance"],"best_for":["CI/CD pipelines that need to reset email state between test runs","Long-running test suites that accumulate emails and need periodic cleanup"],"limitations":["Deletion is permanent — no recovery or undo mechanism once emails are deleted","Bulk deletion of entire inbox cannot be filtered — all emails are deleted regardless of age or content","No scheduled cleanup or retention policies — requires explicit API calls to delete emails","Deletion rate-limited by Mailtrap API; very large bulk deletions may require multiple requests"],"requires":["Inbox ID to delete from","Optional: specific email ID(s) to delete","Mailtrap API token with delete permissions on inbox"],"input_types":["inbox_id (integer)","optional: email_id (integer) for selective deletion","optional: delete_all (boolean) for full inbox purge"],"output_types":["confirmation object with fields: deleted_count (integer), success (boolean)"],"categories":["automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-mailtrap__cap_8","uri":"capability://tool.use.integration.mcp.resource.discovery.and.schema.exposure","name":"mcp resource discovery and schema exposure","description":"Implements MCP resource and tool schema definitions that expose Mailtrap capabilities as discoverable, self-documenting interfaces. Provides JSON schema for all tool parameters, return types, and error conditions, enabling MCP clients (Claude, LLM frameworks) to understand available operations without external documentation. Implements MCP resource types for inboxes and emails as queryable entities.","intents":["Enable LLM clients to discover available Mailtrap operations through MCP schema introspection","Provide structured parameter validation and type hints for tool calls","Support automatic UI generation in MCP clients based on tool schemas"],"best_for":["MCP client developers building UI or automation around Mailtrap integration","LLM agents that need to understand available operations through schema inspection"],"limitations":["Schema is static at server startup — changes to Mailtrap API require server restart to reflect in schema","No support for dynamic schema generation based on account capabilities or feature flags","Schema validation is client-side responsibility — server does not enforce schema compliance"],"requires":["MCP-compatible client with schema introspection support","MCP server running with Mailtrap MCP implementation"],"input_types":["implicit: MCP schema introspection requests"],"output_types":["JSON schema objects describing tools, resources, and parameters"],"categories":["tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":26,"verified":false,"data_access_risk":"high","permissions":["Mailtrap account with API token (available in account settings)","MCP-compatible client (Claude Desktop, LLM framework with MCP support, or custom MCP host)","At least one configured sandbox inbox in Mailtrap","Network access to Mailtrap API endpoints (api.mailtrap.io)","Mailtrap API token (generated in account settings)","Environment variable MAILTRAP_API_TOKEN or equivalent configuration mechanism","MCP server runtime with environment variable access","Valid Mailtrap API token with account-level read permissions","At least one sandbox inbox configured in Mailtrap account","Valid inbox ID from inbox enumeration or hardcoded configuration"],"failure_modes":["Read-only access to sandbox inboxes — cannot send emails directly through MCP (requires separate Mailtrap Send API)","No built-in email parsing or HTML rendering — returns raw MIME content that requires client-side processing","Sandbox isolation means no access to production email data; testing limited to pre-configured test inboxes","MCP protocol overhead adds ~50-100ms per request compared to direct REST API calls","Credentials must be provided at server startup — no runtime credential rotation without server restart","No built-in credential caching or refresh token support; relies on static API tokens that don't expire","Environment variable approach requires careful secret management in CI/CD — no native integration with secret managers (Vault, AWS Secrets Manager)","No filtering by inbox type or status — returns all inboxes regardless of active/inactive state","Inbox list is cached per MCP session; new inboxes created after server startup won't appear until restart","No support for inbox creation or deletion through MCP — read-only enumeration","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.28,"ecosystem":0.39999999999999997,"match_graph":0.25,"freshness":0.52,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.15,"match_graph":0.23,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-06-17T09:51:03.578Z","last_scraped_at":"2026-05-03T14:00:15.503Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=mailtrap","compare_url":"https://unfragile.ai/compare?artifact=mailtrap"}},"signature":"5l43I4wmXJyel4cW2Zy75uJYjZ17YdOGkohoBLZ6W70zT9i/NDfGdowuCbs8kvHESKlVbv5SQdGpjGZth3dwDA==","signedAt":"2026-06-22T18:29:45.555Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/mailtrap","artifact":"https://unfragile.ai/mailtrap","verify":"https://unfragile.ai/api/v1/verify?slug=mailtrap","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}