{ "name": "Mailchimp Transactional", "slug": "mandrill", "website_url": "https://mailchimp.com/developer/transactional/", "vendor_description": "Send targeted and event-driven messages to anyone, fast—with best-in-class deliverability.", "categories": [ "email" ], "summary": "Mandrill is Mailchimp's transactional email add-on for targeted, event-driven messages, with inbound processing and transactional SMS. The REST API uses API-key auth, webhooks, and four SDKs. Pricing is published and self-serve, sold in blocks of about $20 with a 500-email free allowance. It is GDPR and ISO 27001 compliant.", "capabilities": { "supported_actions": [ "allowlists_add", "allowlists_list", "allowlists_delete", "exports_info", "exports_list", "exports_rejects", "exports_allowlist", "exports_activity", "ips_list", "ips_info", "ips_provision", "ips_start_warmup", "ips_cancel_warmup", "ips_set_pool", "ips_delete", "ips_list_pools", "ips_pool_info", "ips_create_pool", "ips_delete_pool", "ips_check_custom_dns", "ips_set_custom_dns", "inbound_domains", "inbound_add_domain", "inbound_check_domain", "inbound_delete_domain", "inbound_routes", "inbound_add_route", "inbound_update_route", "inbound_delete_route", "inbound_send_raw", "messages_send", "messages_send_sms", "messages_send_template", "messages_send_mc_template", "messages_search", "messages_search_time_series", "messages_info", "messages_content", "messages_parse", "messages_send_raw", "messages_list_scheduled", "messages_cancel_scheduled", "messages_reschedule", "metadata_list", "metadata_add", "metadata_update", "metadata_delete", "rejects_add", "rejects_add_sms", "rejects_delete", "rejects_delete_sms", "rejects_list", "rejects_list_sms", "senders_list", "senders_domains", "senders_add_domain", "senders_delete_domain", "senders_check_domain", "senders_verify_domain", "senders_info", "senders_time_series", "subaccounts_list", "subaccounts_add", "subaccounts_info", "subaccounts_update", "subaccounts_delete", "subaccounts_pause", "subaccounts_resume", "tags_list", "tags_delete", "tags_info", "tags_time_series", "tags_all_time_series", "templates_add", "templates_info", "templates_update", "templates_delete", "templates_list", "templates_publish", "urls_list", "urls_search", "urls_time_series", "users_info", "users_ping", "webhooks_list", "webhooks_add", "webhooks_info", "webhooks_update", "webhooks_delete" ], "supported_regions": [], "supported_languages": [], "input_types": [ "JSON", "HTTP POST parameters" ], "output_types": [ "JSON", "XML", "YAML", "PHP" ], "webhooks_supported": true, "sandbox_available": true, "sdk_languages": [ "Node.js", "Python", "PHP", "Ruby" ], "mcp_server_available": false }, "integration": { "api_style": "rest", "base_url": "https://mandrillapp.com/api/1.0/", "api_version": "1.0", "versioning_scheme": "url", "stability": "ga", "deprecation_policy_url": null, "auth_methods": [ "api_key" ], "auth_docs_url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "idempotency_supported": null, "error_format": "vendor-specific", "webhook_signing": "hmac_sha1", "webhook_events_url": "https://mailchimp.com/developer/transactional/docs/webhooks/", "rate_limit_requests": null, "rate_limit_window": null, "sdk_packages": [ { "stars": 52, "package": "@mailchimp/mailchimp_transactional", "archived": false, "language": "Node.js", "official": true, "repo_url": "https://github.com/mailchimp/mailchimp-transactional-node", "last_pushed_at": "2026-03-24T16:27:25Z" }, { "stars": 49, "package": "mailchimp-transactional", "archived": false, "language": "Python", "official": true, "repo_url": "https://github.com/mailchimp/mailchimp-transactional-python", "last_pushed_at": "2026-03-24T16:27:27Z" }, { "stars": 51, "package": "mailchimp/transactional", "archived": false, "language": "PHP", "official": true, "repo_url": "https://github.com/mailchimp/mailchimp-transactional-php", "last_pushed_at": "2026-03-24T16:27:27Z" }, { "stars": 22, "package": "MailchimpTransactional", "archived": false, "language": "Ruby", "official": true, "repo_url": "https://github.com/mailchimp/mailchimp-transactional-ruby", "last_pushed_at": "2026-03-24T16:27:39Z" } ], "mcp_url": "https://mandrillapp.com/mcp", "quickstart_url": "https://mailchimp.com/developer/transactional/guides/quick-start/" }, "pricing": { "pricing_model": "hybrid", "has_published_pricing": true, "starting_price_usd": "20.0000", "price_basis": "block", "free_tier_available": false, "free_tier_limit": "500 emails", "free_tier_details": "New transactional email users can get up to 500 free email sends to their verified domain. Restrictions apply.", "minimum_commitment": "Requires a Mailchimp Standard or Premium plan", "self_serve_signup": true, "requires_sales_call": false, "requires_verification": true, "enterprise_plan_available": true, "price_points": [ { "plan": "Free Demo", "item": "emails", "amount_usd": "0.0000", "amount_percent": null, "per": "500 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "emails", "amount_usd": "20.0000", "amount_percent": null, "per": "25,000 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "emails", "amount_usd": "18.0000", "amount_percent": null, "per": "25,000 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "emails", "amount_usd": "16.0000", "amount_percent": null, "per": "25,000 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "emails", "amount_usd": "14.0000", "amount_percent": null, "per": "25,000 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "emails", "amount_usd": "12.0000", "amount_percent": null, "per": "25,000 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "emails", "amount_usd": "10.0000", "amount_percent": null, "per": "25,000 emails", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" }, { "plan": null, "item": "dedicated IP", "amount_usd": "29.9500", "amount_percent": null, "per": "month", "currency": "USD", "source_url": "https://mailchimp.com/pricing/transactional-email/" } ] }, "compliance": { "soc2": "unknown", "hipaa": false, "gdpr": true, "iso_27001": true, "pci_dss": null, "sla_published": false, "sla_url": null, "data_retention_policy_url": null, "documented_rate_limits": "20 searches per minute for messages/search endpoint; hourly sending quota exists but specific limit is not documented", "known_restrictions": [ "Essentials plan is not eligible for Transactional Email", "Unused emails in a block don't roll over month to month", "Contact lists cannot be uploaded or stored in Mailchimp Transactional", "All API calls must use HTTP POST" ] }, "developer": { "docs_url": "https://developer.mailchimp.com", "api_reference_url": null, "openapi_spec_url": null, "postman_collection_url": null, "changelog_url": "https://mailchimp.com/whats-new", "status_page_url": "https://status.mailchimp.com", "llms_txt_url": "https://mailchimp.com/llms.txt", "markdown_docs_url": null }, "adoption": { "launched_at": "2012-01-01", "ga_date": null, "github_stars": null, "github_stars_at": null, "notable_customers": [] }, "scores": { "agent_friendliness": null, "pricing_transparency": null, "setup_speed": null, "docs_quality": null, "procurement_friction": null, "trust_readiness": null, "best_for": [], "avoid_if": [] }, "sources": [ { "field": "documented_rate_limits", "url": "https://mailchimp.com/developer/release-notes/message-search-rate-limit-now-enforced/", "excerpt": "If you exceed the limit of 20 searches per minute, we'll now return a 429 Too Many Requests response code.", "confidence": "medium" }, { "field": "vendor_description", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "high" }, { "field": "output_types", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": "Send a new transactional message through Mandrill using a Mailchimp Transactional template.", "confidence": "medium" }, { "field": "output_types", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Mailchimp Transactional has a test mode that lets you experiment and refine", "confidence": "medium" }, { "field": "sdk_languages", "url": "https://mailchimp.com/developer/tools/", "excerpt": "Mailchimp's API client libraries and mobile SDKs make it easy to work with the Mailchimp Marketing and Transactional APIs with your language or platform", "confidence": "medium" }, { "field": "free_tier_details", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block 1 to 20 blocks 1 to 500k emails $20/block $20 per block 21 to 40 blocks", "confidence": "medium" }, { "field": "name", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "high" }, { "field": "sla_published", "url": "https://mailchimp.com/resources/service-level-agreement/", "excerpt": "A service-level agreement (SLA) is a type of contract that outlines the level of service expected between a service provider and customers.", "confidence": "medium" }, { "field": "sla_published", "url": "https://www.mailgun.com/resources/comparisons/mailchimp-alternatives/", "excerpt": "Mailgun offers a Speed to Delivery SLA that is financially guaranteed and 99.99% Uptime SLA included for every sender, no matter the size.", "confidence": "medium" }, { "field": "iso_27001", "url": "https://www.intuit.com/compliance/", "excerpt": "Learn about Intuit's commitment to security through PCI DSS, SOC 2, ISO 27001, and VPAT compliance. Download our certifications and attestations.", "confidence": "medium" }, { "field": "iso_27001", "url": "https://compliance-portal.app.intuit.com/", "excerpt": "These certifications run for 3 years (renewal audits) and have annual touch point audits (surveillance audits).", "confidence": "medium" }, { "field": "webhooks_supported", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": null, "confidence": "high" }, { "field": "free_tier_available", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block 1 to 20 blocks 1 to 500k emails $20/block", "confidence": "high" }, { "field": "minimum_commitment", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block 1 to 20 blocks 1 to 500k emails $20/block $20 per block", "confidence": "medium" }, { "field": "minimum_commitment", "url": "https://mailchimp.com/legal/terms/", "excerpt": "Use of Transactional SMS through Mandrill is also subject to the Additional Terms for Transactional Email (formerly Mandrill).", "confidence": "medium" }, { "field": "supported_regions", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "medium" }, { "field": "known_restrictions", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block", "confidence": "medium" }, { "field": "known_restrictions", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": null, "confidence": "medium" }, { "field": "self_serve_signup", "url": "https://mailchimp.com/developer/transactional/guides/quick-start/", "excerpt": "This guide will give you everything you need to start using the Mailchimp Transactional API to send fast, personalized transactional emails.", "confidence": "high" }, { "field": "self_serve_signup", "url": "https://mailchimp.com/help/about-api-keys/", "excerpt": "API keys allow other apps access to your account without a password. Learn how to locate and generate API keys for your Mailchimp Marketing account.", "confidence": "high" }, { "field": "gdpr", "url": "https://mailchimp.com/gdpr/", "excerpt": "Our guide walks you through information about the GDPR, what steps Mailchimp takes towards complying, how we keep your data safe, and how we lawfully access", "confidence": "high" }, { "field": "website_url", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "high" }, { "field": "primary_use_cases", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "medium" }, { "field": "primary_use_cases", "url": "https://mailchimp.com/features/transactional-email-infrastructure/", "excerpt": "Mailchimp's delivery API is a type of transactional email service that allows you to send transactional emails from websites and applications.", "confidence": "medium" }, { "field": "primary_use_cases", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": "Send a new transactional message through Mandrill using a Mailchimp Transactional template.", "confidence": "medium" }, { "field": "supported_actions", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": "Send a new transactional message through Mandrill using a Mailchimp Transactional template. Search messages by date. Search recently sent messages range, tags,", "confidence": "medium" }, { "field": "categories", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "high" }, { "field": "categories", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": null, "confidence": "high" }, { "field": "hipaa", "url": "https://www.hipaajournal.com/mandrill-hipaa-compliant/", "excerpt": "Mandrill is not HIPAA compliant and cannot be used by HIPAA covered entities or business associates to send transactional emails that contain Protected Health", "confidence": "medium" }, { "field": "hipaa", "url": "https://www.paubox.com/blog/mandrill-hipaa-compliance", "excerpt": "No, based on our research, Mailchimp Transactional Email is not HIPAA compliant.", "confidence": "medium" }, { "field": "hipaa", "url": "https://mailchimp.com/resources/hipaa-compliant-email/", "excerpt": "Learn about HIPAA email requirements and how you can ensure your business is protecting personal health information while complying with HIPAA regulations.", "confidence": "medium" }, { "field": "supported_languages", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "high" }, { "field": "soc2", "url": "https://www.intuit.com/compliance/", "excerpt": "Learn about Intuit's commitment to security through PCI DSS, SOC 2, ISO 27001, and VPAT compliance.", "confidence": "medium" }, { "field": "soc2", "url": "https://compliance-portal.app.intuit.com/", "excerpt": "These certifications run for 3 years (renewal audits) and have annual touch point audits (surveillance audits).", "confidence": "medium" }, { "field": "soc2", "url": "https://www.rankiteo.com/company/intuitmailchimp/compare/taxact", "excerpt": "Neither Intuit Mailchimp nor TaxAct holds SOC 2 Type 2 certification", "confidence": "medium" }, { "field": "mcp_server_available", "url": "https://mcp.pipedream.com/app/mailchimp", "excerpt": "Use Pipedream's MCP server to connect your Mailchimp account to AI tools like Cursor, Claude, and Windsurf.", "confidence": "medium" }, { "field": "mcp_server_available", "url": "https://apify.com/engaging_image/mailchimp-mcp-server", "excerpt": "The most comprehensive Mailchimp MCP Server built on the Model Context Protocol (MCP), giving your AI assistant full control over your Mailchimp account.", "confidence": "medium" }, { "field": "mcp_server_available", "url": "https://github.com/mattcoatsworth/mailchip-mcp-server", "excerpt": "A Model Context Protocol (MCP) server for interacting with the Mailchimp API. Tools for managing campaigns, lists, templates, reports, and automations", "confidence": "medium" }, { "field": "pci_dss", "url": "https://mailchimp.com/about/security/", "excerpt": "Mailchimp's credit card processing vendor uses security measures to protect your information both during the transaction", "confidence": "medium" }, { "field": "pci_dss", "url": "https://www.intuit.com/compliance/", "excerpt": "Learn about Intuit's commitment to security through PCI DSS, SOC 2, ISO 27001, and VPAT compliance.", "confidence": "medium" }, { "field": "pricing_model", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block 1 to 20 blocks 1 to 500k emails $20/block $20 per block 21 to 40 blocks", "confidence": "high" }, { "field": "has_published_pricing", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block 1 to 20 blocks 1 to 500k emails $20/block $20 per block 21 to 40 blocks", "confidence": "high" }, { "field": "requires_sales_call", "url": "https://mailchimp.com/developer/transactional/guides/quick-start/", "excerpt": "This guide will give you everything you need to start using the Mailchimp Transactional API to send fast, personalized transactional emails.", "confidence": "high" }, { "field": "enterprise_plan_available", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Each block is a credit for 25,000 emails Total Blocks Emails per Month Price Per Block 1 to 20 blocks 1 to 500k emails $20/block $20 per block 21 to 40 blocks", "confidence": "medium" }, { "field": "enterprise_plan_available", "url": "https://www.trustradius.com/products/mailchimp-transactional-email/reviews", "excerpt": "transactional emails using API or SMTP. Categories & Use Cases. Transactional Email. Starting at. $350. per month.", "confidence": "medium" }, { "field": "input_types", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": null, "confidence": "medium" }, { "field": "sandbox_available", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Mailchimp Transactional has a test mode that lets you experiment and refine", "confidence": "high" }, { "field": "webhook_events_url", "url": "https://mailchimp.com/developer/transactional/docs/webhooks/", "excerpt": "Mailchimp Transactional batches events for each webhook URL and POSTs approximately once per minute. If the webhook URL does not return a 200 HTTP response code", "confidence": "high" }, { "field": "base_url", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": null, "confidence": "high" }, { "field": "free_tier_limit", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Total Blocks, Emails per Month, Price Per Block. 1 to 20 blocks, 1 to 500k emails, $20/block $20 per block", "confidence": "high" }, { "field": "fields_not_found", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Authentication. You can authenticate requests to the Transactional API using your API key. All requests to the Transactional API are POST requests, and at", "confidence": "medium" }, { "field": "fields_not_found", "url": "https://mailchimp.com/developer/transactional/api/", "excerpt": "Returns information about an export job. If the export job's state is 'complete', the returned data will include a URL you can use to fetch the results.", "confidence": "medium" }, { "field": "rate_limit_window", "url": "https://mailchimp.com/developer/release-notes/message-search-rate-limit-now-enforced/", "excerpt": "If you exceed the limit of 20 searches per minute, we'll now return a 429 Too Many Requests response code. You can retry your request 60 seconds", "confidence": "medium" }, { "field": "starting_price_usd", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Total Blocks, Emails per Month, Price Per Block. 1 to 20 blocks, 1 to 500k emails, $20/block $20 per block", "confidence": "high" }, { "field": "starting_price_usd", "url": "https://mailchimp.com/features/transactional-email/", "excerpt": "Unlike Mailchimp's marketing plans, which are priced by contact count, Mailchimp Transactional is priced by email send volume. Pricing starts at $20 per block,", "confidence": "high" }, { "field": "versioning_scheme", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": null, "confidence": "high" }, { "field": "auth_docs_url", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Authentication. You can authenticate requests to the Transactional API using your API key. All requests to the Transactional API are POST requests, and at", "confidence": "high" }, { "field": "price_basis", "url": "https://mailchimp.com/pricing/transactional-email/", "excerpt": "Total Blocks, Emails per Month, Price Per Block. 1 to 20 blocks, 1 to 500k emails, $20/block $20 per block", "confidence": "high" }, { "field": "price_basis", "url": "https://mailchimp.com/features/transactional-email/", "excerpt": "Unlike Mailchimp's marketing plans, which are priced by contact count, Mailchimp Transactional is priced by email send volume. Pricing starts at $20 per block,", "confidence": "high" }, { "field": "requires_verification", "url": "https://mailchimp.com/developer/transactional/docs/authentication-delivery/", "excerpt": "Mailchimp Transactional automatically authenticates all emails sent through our servers, but by adding DNS records to your domain, we're able to send on your", "confidence": "high" }, { "field": "requires_verification", "url": "https://mailchimp.com/developer/transactional/guides/send-first-email/", "excerpt": "In this guide, we'll configure your DNS records, verify that you own the domain you want to send from, and walk through sending your first transactional email.", "confidence": "high" }, { "field": "api_style", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "All requests to the Transactional API are POST requests, and at", "confidence": "medium" }, { "field": "idempotency_supported", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Authentication. You can authenticate requests to the Transactional API using your API key. All requests to the Transactional API are POST requests, and at", "confidence": "medium" }, { "field": "notable_customers", "url": "https://mailchimp.com/case-studies/", "excerpt": "How to Create a Case Study That Establishes Trust and Authority Products Why Mailchimp? Product Updates Email Marketing Transactional Email", "confidence": "medium" }, { "field": "mcp_url", "url": "https://mailchimp.com/developer/transactional/guides/how-to-use-mailchimps-transactional-messaging-mcp/", "excerpt": "An MCP (Model Context Protocol) allows AI agents to interact with API, knowledge bases, or other content. Our MCP specifically allows you to interact with the Transactional Messaging API, give onboard", "confidence": "medium" }, { "field": "ga_date", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Authentication. You can authenticate requests to the Transactional API using your API key. All requests to the Transactional API are POST requests, and at", "confidence": "medium" }, { "field": "stability", "url": "https://mailchimp.com/developer/transactional/", "excerpt": "Learn how to use Mailchimp Transactional to send targeted and event driven messages to anyone, fast—with best-in-class deliverability.", "confidence": "medium" }, { "field": "data_retention_policy_url", "url": "https://www.intuit.com/privacy/statement/", "excerpt": "Unless you specifically ask us to delete your personal information, we retain your personal information as long as it is necessary to comply", "confidence": "medium" }, { "field": "rate_limit_requests", "url": "https://mailchimp.com/developer/release-notes/message-search-rate-limit-now-enforced/", "excerpt": "If you exceed the limit of 20 searches per minute, we'll now return a 429 Too Many Requests response code. You can retry your request 60 seconds", "confidence": "medium" }, { "field": "deprecation_policy_url", "url": "https://mailchimp.com/legal/", "excerpt": "Learn more about Mailchimp's legal policies, our mission to protect your privacy, what you can and can't do with Mailchimp, and how we handle user accounts.", "confidence": "medium" }, { "field": "quickstart_url", "url": "https://mailchimp.com/developer/transactional/guides/quick-start/", "excerpt": "Use this guide to start using the Mailchimp Transactional API to send fast, personalized transactional emails. Learn how to make a Transactional API call.", "confidence": "high" }, { "field": "auth_methods", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Authentication. You can authenticate requests to the Transactional API using your API key. All requests to the Transactional API are POST requests, and at", "confidence": "high" }, { "field": "api_version", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": null, "confidence": "high" }, { "field": "sdk_packages", "url": "https://mailchimp.com/developer/tools/", "excerpt": "Mailchimp's API client libraries and mobile SDKs make it easy to work with the Mailchimp Marketing and Transactional APIs with your language or platform", "confidence": "high" }, { "field": "sdk_packages", "url": "https://github.com/topics/mailchimp-sdk?o=desc&s=", "excerpt": "The official Node.js client library for the Mailchimp Transactional API. nodejs mandrill mandrill-api-wrapper mailchimp mandrill-node mandrill-api mailchimp-sdk.", "confidence": "high" }, { "field": "error_format", "url": "https://mailchimp.com/developer/transactional/docs/fundamentals/", "excerpt": "Authentication. You can authenticate requests to the Transactional API using your API key. All requests to the Transactional API are POST requests, and at", "confidence": "medium" }, { "field": "sla_url", "url": "https://mailchimp.com/resources/service-level-agreement/", "excerpt": "A service-level agreement (SLA) is a type of contract that outlines the level of service expected between a service provider and customers.", "confidence": "medium" }, { "field": "launched_at", "url": "http://blog.mandrill.com.s3-website-us-east-1.amazonaws.com/", "excerpt": "The MailChimp team built Mandrill in 2012 as a transactional email tool. It was a startup within MailChimp that functioned as a completely separate product.", "confidence": "high" }, { "field": "launched_at", "url": "https://www.cmswire.com/digital-marketing/mailchimps-mandrill-move-enrages-email-users/", "excerpt": "MailChimp launched Mandrill in 2012 because many customers wanted the ability to send one-to-one (“transactional”) messages to their customers.", "confidence": "high" }, { "field": "webhook_signing", "url": "https://mailchimp.com/developer/transactional/guides/track-respond-activity-webhooks/", "excerpt": "First, we need to get our webhook authentication key. When you create a webhook via the Mailchimp Transactional app, a signing key is automatically generated.", "confidence": "high" }, { "field": "webhook_signing", "url": "https://mailchimp.com/developer/transactional/docs/webhooks/", "excerpt": "Mailchimp Transactional batches events for each webhook URL and POSTs approximately once per minute. If the webhook URL does not return a 200 HTTP response code", "confidence": "high" } ], "fields_not_found": [ "ga_date", "idempotency_supported" ], "source_confidence": "high", "last_verified_at": "2026-06-06T00:00:00.000Z" }