Connect Postmark to Claude

To use Postmark in Claude, connect your Postmark account in Manyplug and add Manyplug to Claude once. Claude then gets 6 Postmark tools, for example: “Send an email”, “Send a template”, and “Templates”. It takes about 4 minutes and works on the free plan.

Connect Postmark Free plan, no card

1. Connect Postmark in Manyplug

Click “Connect Postmark” and paste the key or app password into Manyplug’s form:

Your Postmark server token. Takes about a minute.

Open Postmark → Servers, pick the server and open its API Tokens tab.Open Postmark servers
Copy the Server API token (or click Generate another token).
Paste the token into the form. Connect another account for another server.

Emails go out only from confirmed senders and only after you confirm.
The token sees only its own server, not your whole Postmark account.

2. Add Manyplug to Claude

claude.ai, Claude Desktop and mobile. The free plan allows one custom connector, and Manyplug is one connector for all your services.

Open Customize → Connectors (in older versions: Settings → Connectors).
Click “+ Add” → “Add custom connector”, name it Manyplug, paste the URL and click Continue.
Keep the suggested sign-in settings and click Add, then Connect: Manyplug opens — sign in and allow access.
In a chat, click “+” → Connectors, turn Manyplug on and ask: “Connect my email”.

Full guide: Claude

3. Ask Claude

How many emails did Postmark send and bounce this week?
Did the password reset email reach ben@acme.com?
Send the “Invoice ready” template to ann@acme.com with the amount $120.

What Claude can do in Postmark

Each action can be turned off per account, and changes can wait for your OK.

Action	Access
Send an email Sends an email.	Risky
Send a template Sends a templated email.	Risky
Templates The server’s templates.	Reads
Sent messages Finds sent emails.	Reads
Message An email and its delivery events.	Reads
Stats Sends, bounces, opens, clicks.	Reads

Questions

Can I connect two Postmark accounts to Claude?

Yes. Connect each one in Manyplug under its own name, for example Work and Personal. Claude can use one of them or all at once.

Will Claude change anything in Postmark without asking?

By default these actions wait for your approval before they run: “Send an email” and “Send a template”. Other changes follow your rules, which you can make stricter per account.

Do I need an official Postmark MCP server for this?

No. Manyplug connects to Postmark itself with a key or app password you paste into its form, and gives Claude the tools through one MCP address, together with your other services.

Is it free to connect Claude to Manyplug?

Yes. New workspaces get 14 days of Pro free, then the free plan keeps going with 150 actions a month and up to 3 connected accounts. No card needed. Paid plans start at $5 a month.

Does Claude see my passwords or API keys?

No. Keys are entered on Manyplug’s own pages, stored encrypted with a separate key per account, and the AI only receives tool results.

Postmark in other AI apps

ChatGPT Claude Code Cursor VS Code Codex Gemini CLI Windsurf

More services for Claude

AirtableBases and tables: find and write records.AsanaTasks and projects: list, add, complete.BitbucketPull requests, reviews and pipelines.BrevoContacts, lists, campaigns, emails.Cal.comBookings and event types.CalendlyBooked meetings and booking links.ClickUpYour tasks, lists and statuses.CloudflareDNS records and cache purges.ConfluenceSearch and read pages, write new ones.Email (IMAP/SMTP)Any IMAP/SMTP mailbox: iCloud, Fastmail or your company mail.FigmaFiles, frames, exports, comments.FreshdeskTickets, customer replies, notes.GitHubRepositories, issues and pull requests.GitLabIssues and merge requests.GmailSearch, read, draft and send email.Google CalendarEvents, free time, invitations.Google DriveFind files and read documents.Google SheetsRead and write cells, append rows.HarvestTime tracking, timers, reports.HTTP APIAny REST/JSON API by its address and key, no code.HubSpotContacts, companies and deals.IntercomCustomer conversations and contacts.JiraIssues by JQL, create, change status, comment.LinearTeam issues: find, create, change status.MailchimpSubscribers, tags, campaign reports.MiroBoards, stickies and cards.monday.comBoards, items, statuses and updates.NetlifySites, deploys, builds, forms.NotionPages and databases: search, read, write.PagerDutyIncidents, notes, on-call.PipedriveDeals, people and organizations.SendGridEmails, templates, contacts, stats.SentryErrors, stack traces, resolving issues.SlackChannels, message search, posting.SmartsheetSheets, rows and comments.StripePayments, customers, invoices and refunds.TelegramYour bot, and with Telegram Business your own chats: message search, replies.TodoistTasks and projects: list, add, complete.Toggl TrackTimers and time entries.TrelloBoards, lists and cards.TwilioTexts, numbers and the call log.TypeformForms and their responses.VercelDeployments, build logs, domains.WebflowCMS: drafts, edits, publishing.WhatsAppA WhatsApp Business number through the official API: chats, search, replies.WordPressPosts, drafts, publishing, comments.ZendeskTickets, customer replies, notes.ZoomMeetings, links, reschedules, recordings.