Overview
The Postmark server enables AI assistants to interact with Postmark, a reliable transactional email service designed for sending application emails, notifications, and automated messages with high deliverability.How to Add Postmark
1
Create Postmark Account
- Go to https://account.postmarkapp.com/
- Sign up for an account or log in to your existing account
2
Get API Key
- Navigate to your server in Postmark
- Go to Settings > API Tokens or visit https://account.postmarkapp.com/servers/YOUR_SERVER_ID/credentials
- Copy your Server API Token
3
Connect to Nexus
- Add the Postmark server to your Nexus environment
- When prompted to send an email in Postmark:
- Enter your API key
- Provide your default sender email address
4
Test Connection
Start with a simple command like “List all my email templates” to verify the connection works properly.
Postmark accounts start in test mode until approved. In test mode, you can send to @civic.com addresses (though they may bounce due to DMARC policies). Once approved, you can send to any verified addresses.
What You Can Do
Transactional Emails
Send automated emails with high deliverability and tracking
Template Management
Use pre-built email templates for consistent messaging
Delivery Tracking
Monitor email delivery statistics and engagement metrics
Email Tagging
Organize emails with tags for better analytics and filtering
Available Tools
Email Operations
send_email
send_email
Send individual transactional emails with custom content
send_email_with_template
send_email_with_template
Send emails using pre-defined templates with variable substitution
send_batch
send_batch
Send multiple emails in a single batch request
Template Management
list_templates
list_templates
List all email templates in your account
get_template
get_template
Retrieve a specific template with its content and variables
validate_template
validate_template
Validate template syntax and variables before sending
Analytics & Tracking
get_delivery_stats
get_delivery_stats
View email delivery statistics and performance metrics
get_bounces
get_bounces
List bounced emails with reasons and details
track_email
track_email
Get delivery status and engagement data for sent emails
Configuration
list_sender_signatures
list_sender_signatures
List verified sender email addresses
manage_suppressions
manage_suppressions
Manage email suppression list for bounces and unsubscribes
Use Cases
Template-Based Emails
“Send a welcome email using template 12345 to newuser@example.com” - Use pre-designed templates for consistent branding.Transactional Notifications
“Send a transactional email tagged as ‘order-confirmation’ to customer@example.com” - Send automated notifications with proper categorization.Delivery Monitoring
“Show me email delivery statistics” - Track email performance and deliverability.Template Discovery
“List all my email templates” - Review available templates for use in campaigns.Postmark uses the official MCP server repository from ActiveCampaign/postmark-mcp.Test Mode: New accounts are in test mode until approved by Postmark. Test mode allows sending to specific domains but emails may bounce due to DMARC policies. Authorized accounts can send to any verified addresses.