Postmark by Postmark (ActiveCampaign)
Transactional email API and SMTP service focused on fast delivery, with inbound processing.
Email sending Official MCP server
Price
Free plan
paid plans from $15/mo
Free tier
Yes
100 emails/month (Developer plan, never expires)
SDK downloads
1.2M
npm postmark
Pricing
| Free tier | 100 emails/month (Developer plan, never expires) |
|---|---|
| Cheapest paid plan | $15 a month |
| Usage price | Basic $15/month for 10,000 emails, extra $1.80 per 1,000; Pro $16.50 ($1.30/1,000 extra); Platform $18 ($1.20/1,000) |
| Good to know | Free plan allows no overages. Dedicated IPs from $50/month per IP (300k+ emails/month, Pro or higher). No official Python SDK. |
From the official pricing page, checked Oct 9, 2026. Prices change: confirm before you buy.
Use it from an agent
| MCP server | Official: @activecampaign/postmark-mcp |
|---|---|
| npm | npm install postmark |
| GitHub | ActiveCampaign/postmark.js · 361 stars · last push Jul 10, 2026 |
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