--- title: "PostStack integrations and MCP server - APIANT.ai" description: "Connect PostStack to any other app, or use it from your AI client over MCP. EU-hosted email API for transactional and marketing email, with contacts..." canonical: "https://apiant.ai/connections/poststack" --- # PostStack integrations Connect PostStack to any other app, or use it from your AI client over MCP. EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics Connects with an API key [poststack.dev](https://poststack.dev/) **7** triggers **31** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want to automate with PostStack? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser. ### Set it up in your client ### Claude Code Run this in the directory you want to work in. `claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### Claude, web and desktop Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Cursor Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Codex and the ChatGPT desktop app Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Any other MCP client Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) Popular ## PostStack with the apps people pair it with most - [ **HubSpot to PostStack** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-poststack) - [ **PostStack to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/poststack-to-salesforce) - [ **PostStack to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/poststack-to-slack) - [ **Google Sheets to PostStack** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-poststack) - [ **Gmail to PostStack** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-poststack) - [ **Google Calendar to PostStack** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-poststack) - [ **Google Drive to PostStack** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-poststack) - [ **Mailchimp to PostStack** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-poststack) Pair it ## Connect PostStack with another app - [ **HubSpot to PostStack**](https://apiant.ai/connect/hubspot-to-poststack) - [ **PostStack to Salesforce**](https://apiant.ai/connect/poststack-to-salesforce) - [ **PostStack to Slack**](https://apiant.ai/connect/poststack-to-slack) - [ **Google Sheets to PostStack**](https://apiant.ai/connect/google-sheets-to-poststack) - [ **Gmail to PostStack**](https://apiant.ai/connect/gmail-to-poststack) - [ **Google Calendar to PostStack**](https://apiant.ai/connect/google-calendar-to-poststack) - [ **Google Drive to PostStack**](https://apiant.ai/connect/google-drive-to-poststack) - [ **Mailchimp to PostStack**](https://apiant.ai/connect/mailchimp-to-poststack) - [ **PostStack to Stripe**](https://apiant.ai/connect/poststack-to-stripe) - [ **PostStack to Shopify**](https://apiant.ai/connect/poststack-to-shopify) - [ **PostStack to QuickBooks Online**](https://apiant.ai/connect/poststack-to-quickbooks-online) - [ **Pipedrive to PostStack**](https://apiant.ai/connect/pipedrive-to-poststack) - [ **ActiveCampaign to PostStack**](https://apiant.ai/connect/activecampaign-to-poststack) - [ **Notion to PostStack**](https://apiant.ai/connect/notion-to-poststack) - [ **Airtable to PostStack**](https://apiant.ai/connect/airtable-to-poststack) - [ **PostStack to Trello**](https://apiant.ai/connect/poststack-to-trello) - [ **Asana to PostStack**](https://apiant.ai/connect/asana-to-poststack) - [ **JIRA to PostStack**](https://apiant.ai/connect/jira-to-poststack) - [ **ClickUp to PostStack**](https://apiant.ai/connect/clickup-to-poststack) - [ **PostStack to Zoom**](https://apiant.ai/connect/poststack-to-zoom) - [ **Discord to PostStack**](https://apiant.ai/connect/discord-to-poststack) - [ **PostStack to Twilio**](https://apiant.ai/connect/poststack-to-twilio) - [ **PostStack to SendGrid**](https://apiant.ai/connect/poststack-to-sendgrid) - [ **Outlook to PostStack**](https://apiant.ai/connect/outlook-to-poststack) - [ **Intercom to PostStack**](https://apiant.ai/connect/intercom-to-poststack) - [ **Freshdesk to PostStack**](https://apiant.ai/connect/freshdesk-to-poststack) - [ **Klaviyo to PostStack**](https://apiant.ai/connect/klaviyo-to-poststack) - [ **Brevo to PostStack**](https://apiant.ai/connect/brevo-to-poststack) - [ **PostStack to Typeform**](https://apiant.ai/connect/poststack-to-typeform) - [ **JotForm to PostStack**](https://apiant.ai/connect/jotform-to-poststack) - [ **Calendly to PostStack**](https://apiant.ai/connect/calendly-to-poststack) - [ **PandaDoc to PostStack**](https://apiant.ai/connect/pandadoc-to-poststack) - [ **PostStack to Webflow**](https://apiant.ai/connect/poststack-to-webflow) - [ **PostStack to Wix**](https://apiant.ai/connect/poststack-to-wix) - [ **PostStack to LinkedIn**](https://apiant.ai/connect/poststack-to-linkedin) - [ **PostStack to Facebook**](https://apiant.ai/connect/poststack-to-facebook) - [ **Instagram to PostStack**](https://apiant.ai/connect/instagram-to-poststack) - [ **OpenAI to PostStack**](https://apiant.ai/connect/openai-to-poststack) - [ **PostStack to Anthropic**](https://apiant.ai/connect/poststack-to-anthropic) - [ **OneDrive to PostStack**](https://apiant.ai/connect/onedrive-to-poststack) - [ **Google Docs to PostStack**](https://apiant.ai/connect/google-docs-to-poststack) - [ **Ontraport to PostStack**](https://apiant.ai/connect/ontraport-to-poststack) - [ **Freshworks CRM to PostStack**](https://apiant.ai/connect/freshworks-crm-to-poststack) - [ **PostStack to GoHighLevel**](https://apiant.ai/connect/poststack-to-gohighlevel) - [ **Capsule CRM to PostStack**](https://apiant.ai/connect/capsule-crm-to-poststack) - [ **Copper to PostStack**](https://apiant.ai/connect/copper-to-poststack) - [ **PostStack to Streak**](https://apiant.ai/connect/poststack-to-streak) - [ **NetHunt CRM to PostStack**](https://apiant.ai/connect/nethunt-crm-to-poststack) - [ **MINDBODY to PostStack**](https://apiant.ai/connect/mindbody-to-poststack) - [ **PostStack to Supabase**](https://apiant.ai/connect/poststack-to-supabase) - [ **PostgreSQL to PostStack**](https://apiant.ai/connect/postgresql-to-poststack) - [ **MySQL to PostStack**](https://apiant.ai/connect/mysql-to-poststack) - [ **PostStack to Vercel**](https://apiant.ai/connect/poststack-to-vercel) - [ **PostStack to ElevenLabs**](https://apiant.ai/connect/poststack-to-elevenlabs) - [ **PagerDuty to PostStack**](https://apiant.ai/connect/pagerduty-to-poststack) - [ **PostStack to Pushover**](https://apiant.ai/connect/poststack-to-pushover) - [ **Gravity Forms to PostStack**](https://apiant.ai/connect/gravity-forms-to-poststack) - [ **HubSpot Enterprise to PostStack**](https://apiant.ai/connect/hubspot-enterprise-to-poststack) - [ **Google Forms to PostStack**](https://apiant.ai/connect/google-forms-to-poststack) - [ **Facebook Lead Ads to PostStack**](https://apiant.ai/connect/facebook-lead-ads-to-poststack) What your agent can do with PostStack ## Triggers and actions 7 triggers · 31 actions - Trigger **Contact Deleted (instant)** Fires when a contact is deleted (event: contact.deleted). - Trigger **Contact Updated (instant)** Fires when a contact is updated (event: contact.updated). - Trigger **Email Bounced (instant)** Fires when an email bounces (event: email.bounced). - Trigger **Email Delivered (instant)** Fires when an email is delivered (event: email.delivered). - Trigger **New Contact (instant)** Fires when a contact is created (event: contact.created). - Trigger **New Inbound Email** Polls for newly received inbound emails. - Trigger **New Sent Email (instant)** Fires when an email is sent (event: email.sent). - Action **Add a broadcast** Create a new marketing broadcast. - Action **Add a contact** Create a new contact. - Action **Add a segment** Create a new manual contact segment. - Action **Add a template** Create a new email template. - Action **Add contacts to segment** Add contacts to an existing segment. - Action **Add suppression** Add an address to the suppression list. - Action **Cancel broadcast** Cancel an in-flight broadcast. - Action **Cancel email** Cancel a scheduled or queued email before it sends. - Action **Delete a contact** Delete a contact. - Action **Delete a template** Delete an email template. - Action **Get a contact** Fetch one contact by ID. - Action **Get a template** Fetch one email template by ID. - Action **Get broadcast** Retrieve one broadcast by its public id, including the HTML and text bodies that the list endpoint omits. - Action **Get email** Fetch one sent or queued email by ID. - Action **Get email events** Get the delivery event timeline for one email. - Action **Get inbound email** Fetch one received inbound email by ID. - Action **Import contacts** Bulk-import a CSV list of contacts. - Action **List broadcasts** List marketing broadcasts. - Action **List contacts** List contacts in the account. - Action **List emails** List sent, queued, and scheduled emails. - Action **List inbound emails** List emails received via inbound parsing. - Action **List segments** List contact segments. - Action **List suppressed addresses** List addresses on the suppression list. - Action **List templates** List email templates. - Action **Send an email** Send a transactional email through PostStack. - Action **Send broadcast** Start sending a broadcast to its recipients. - Action **Send emails in batch** Send up to 100 emails in a single request. - Action **Update a contact** Update an existing contact's fields. - Action **Update a template** Update an email template, creating a new version. - Action **Update email** Reschedule a queued email's send time. - Action **Validate email address** Check whether an email address is valid and deliverable. ## Related apps - [ **PostStack to Benchmark Email** Benchmark Email is an email marketing platform that anyone can use to send emails in a jiff.](https://apiant.ai/connect/poststack-to-benchmark-email) - [ **BigMailer to PostStack** BigMailer is email marketing software for agencies and developers.](https://apiant.ai/connect/bigmailer-to-poststack) - [ **Buttondown to PostStack** Buttondown is an easy way to start and grow your newsletter.](https://apiant.ai/connect/buttondown-to-poststack) - [ **Cakemail to PostStack** Cakemail provides all the tools you need to deliver the emails people want.](https://apiant.ai/connect/cakemail-to-poststack) - [ **Campaign Refinery to PostStack** Campaign Refinery is an email marketing platform for broadcasts, contact management & automated sequences...](https://apiant.ai/connect/campaign-refinery-to-poststack) - [ **PostStack to Disify** Disify checks email addresses for disposable and temporary providers.](https://apiant.ai/connect/poststack-to-disify) - [ **PostStack to Emailit** Transactional and marketing email delivery API with SMTP support, domain verification, and open/click...](https://apiant.ai/connect/poststack-to-emailit) - [ **PostStack to Emailr** Emailr is an email infrastructure platform that lets you receive and send emails programmatically.](https://apiant.ai/connect/poststack-to-emailr) [More in Email](https://apiant.ai/apps/email) Reviews ## What our customers say Questions ## PostStack, answered ### ### Is there a PostStack MCP server? APIANT's MCP server at https://mcp.apiant.ai works with PostStack. Add that address to any AI client that takes a remote MCP server and sign in once in your browser. Your client can then run PostStack actions on demand, or have APIANT build, test and run automations that use PostStack. Nothing to install. ### ### What can start an automation from PostStack? Any of PostStack's 7 triggers in the catalog, including Contact Updated (instant), New Contact (instant), New Inbound Email and New Sent Email (instant). Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack? Any of PostStack's 31 actions, including Send an email, Send broadcast, Send emails in batch and Update a contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can I use PostStack directly from Claude, ChatGPT or Cursor? Yes. Connect your AI client to APIANT once and it works with PostStack two ways. Ask it to do something in PostStack once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running on its own. A one-off action uses your plan's tasks the same way an automation step does. ### ### Do I need to write code against the PostStack API? No. APIANT connects to the PostStack API for you, with your PostStack API key. Describe what you want in plain language and your agent builds it on the PostStack triggers and actions in the catalog. If you need an endpoint that is not there yet, your agent reads the PostStack API documentation and adds it. ### ### Which apps can PostStack connect to? Any app in the catalog; the list on this page pairs PostStack with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector. ### ### What happens when something fails? Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships. ### ### Is there a free plan? Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.