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Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
POSTMARK_TIMEOUTNoPer-request timeout, in seconds30
POSTMARK_BASE_URLNoAPI base URL for testinghttps://api.postmarkapp.com
POSTMARK_READ_ONLYNoWhen truthy (1/true/yes/on), hide and block all write toolsfalse
POSTMARK_SERVER_TOKENYesPostmark server token (sent as X-Postmark-Server-Token)

Capabilities

Features and capabilities supported by this server

CapabilityDetails
tools
{
  "listChanged": true
}
logging
{}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
extensions
{
  "io.modelcontextprotocol/ui": {}
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
send_emailA

Send a single email with content supplied directly.

Requires html_body and/or text_body. BLOCKED in read-only mode.

send_email_with_templateA

Send a single email rendered from a stored template.

Provide exactly one of template_id or template_alias. The subject comes from the template. BLOCKED in read-only mode.

send_email_batchA

Send up to 500 individually-composed emails in one request.

Returns one result per message; Postmark returns HTTP 200 even when individual messages fail, so inspect each element's ErrorCode/Message. BLOCKED in read-only mode.

send_email_batch_with_templatesA

Send up to 500 template-rendered emails in one request.

Returns one result per message (inspect each element's ErrorCode/Message). BLOCKED in read-only mode.

list_templatesA

List templates and layouts on the server (paginated).

get_templateA

Fetch a single template's full details by ID or alias.

validate_templateA

Validate and render-preview template content. Persists nothing (safe to run).

Provide at least one of subject, html_body, or text_body.

create_templateA

Create a new template or layout. BLOCKED in read-only mode.

Provide at least one of html_body or text_body.

edit_templateA

Update an existing template. Only provided fields change. BLOCKED in read-only mode.

delete_templateA

Permanently delete a template by ID or alias. BLOCKED in read-only mode.

get_delivery_statsA

Get aggregate delivery statistics, including a per-type bounce breakdown.

list_bouncesA

Search bounces with optional filters (paginated; up to 10,000 results).

get_bounceA

Get the full detail record for a single bounce.

get_bounce_dumpA

Get the raw SMTP source/dump of a single bounce.

activate_bounceA

Reactivate a deactivated address tied to a bounce. BLOCKED in read-only mode.

search_outbound_messagesA

Search outbound messages with optional filters (paginated; up to 10,000 results).

get_outbound_message_detailsA

Get full detail for one outbound message, including body and message events.

search_message_opensA

Search email open events across outbound messages (requires open tracking).

search_message_clicksA

Search link click events across outbound messages (requires link tracking).

get_outbound_overviewB

Get a brief overview of statistics for all outbound email.

get_sent_countsA

Get the total count of sent emails, optionally bucketed over time.

get_bounce_countsB

Get counts of bounced emails, broken down by bounce type.

get_spam_countsB

Get the count of recipients who marked email as spam.

get_open_countsA

Get counts of recipients who opened emails (requires open tracking).

get_click_countsA

Get counts of unique link clicks (requires link tracking).

list_suppressionsA

List suppressions for a message stream, with optional filters.

create_suppressionsA

Add up to 50 addresses to a stream's suppression list. BLOCKED in read-only mode.

delete_suppressionsA

Remove up to 50 addresses from a stream's suppression list (reactivate them).

SpamComplaint suppressions cannot be deleted. BLOCKED in read-only mode.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

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