{"id":"mailserver2-rainloop","name":"rainloop","homepage":"https://hub.docker.com/r/mailserver2/rainloop","repo_url":"https://hub.docker.com/r/mailserver2/rainloop","category":"communication","subcategories":[],"tags":["email","webmail","self-hosted","imap","smtp","web-application"],"what_it_does":"RainLoop is a webmail client for accessing email accounts in the browser. It supports login to standard mail servers (e.g., IMAP/SMTP) and provides a UI for common email tasks such as reading, composing, replying, and managing messages.","use_cases":["Self-hosted webmail for personal or organizational email accounts","Replacing or fronting a legacy webmail UI","Providing a lightweight email access interface behind a web server/reverse proxy","Users needing browser-based email without deploying a full email server stack"],"not_for":["Providing a fully hosted email service (RainLoop is a client, not an email provider)","Use cases requiring modern native email APIs with first-class app-level SDKs (RainLoop is primarily a web application)","High-assurance environments where the security posture and patch cadence of a third-party webmail UI cannot be verified"],"best_when":"You want a self-hosted, browser-based email client that connects to your existing IMAP/SMTP accounts and can be deployed and secured within your infrastructure.","avoid_when":"You need managed SaaS email features, guaranteed uptime/SLA, or you cannot take responsibility for operating/patching the web application and its dependencies.","alternatives":["Roundcube","Thunderbird (desktop client) or mobile apps","SquirrelMail (legacy)","Zimbra/other full webmail suites (heavier)"],"af_score":19.2,"security_score":45.8,"reliability_score":27.5,"package_type":"mcp_server","discovery_source":["docker_mcp"],"priority":"low","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-04-04T19:41:00.382920+00:00","interface":{"has_rest_api":false,"has_graphql":false,"has_grpc":false,"has_mcp_server":false,"mcp_server_url":null,"has_sdk":false,"sdk_languages":[],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":["Email account login via RainLoop UI"],"oauth":false,"scopes":false,"notes":"Authentication is typically to the underlying email service via IMAP/SMTP credentials (or configured account credentials in the app), not an OAuth/API model exposed to external callers."},"pricing":{"model":"Self-hosted web application (pricing depends on Ra","free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"Pricing details are not included in the provided content, so credit card/tiers cannot be confirmed from observable facts."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":19.2,"security_score":45.8,"reliability_score":27.5,"mcp_server_quality":0.0,"documentation_accuracy":10.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":45.0,"rate_limit_clarity":0.0,"tls_enforcement":60.0,"auth_strength":55.0,"scope_granularity":20.0,"dependency_hygiene":40.0,"secret_handling":50.0,"security_notes":"As a self-hosted webmail UI, security depends on correct server-side TLS configuration, safe credential storage, secure session handling, and timely updates. No observable API-level auth/scopes or explicit security guarantees were provided here.","uptime_documented":0.0,"version_stability":40.0,"breaking_changes_history":40.0,"error_recovery":30.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["RainLoop is a web UI; without a documented API/MCP interface, agents would likely need brittle UI/scraping automation rather than stable programmatic calls.","Email operations are stateful (message fetching/updates). Automated retries without idempotency guarantees can cause duplicates or inconsistent UI states."]}}