toolgrep / MCP servers / PostalForm
Alternatives to PostalForm
PostalForm: Mail API and remote MCP server for sending PDFs, letters, and forms as physical postal mail. 8 products similar to PostalForm, compared on pricing, free tier, API, MCP server, SDK and open source. 6 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server.
- Mailbox MCP
Remote MCP server that connects an existing Gmail, Outlook, Microsoft 365 or IMAP mailbox to Claude, ChatGPT or any MCP client for reading, searching, sending and filing email.
- Postman
API engineering for your agents
- MailerSend
Transactional email, SMS, and WhatsApp delivery service with a REST API and SMTP relay
- GoodSign MCP Server
MCP server that lets AI agents send, track and manage GoodSign e-signature documents
- Mailjet
Email marketing software and email API for marketing and transactional email
- Ausca
Pay-per-call APIs and MCP services for agents
- Sending
MCP-native messaging orchestration for email, WhatsApp and Telegram
- Atomic Mail
Email API for AI agents
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| PostalForm | Usage-based · from $3.40 | no | yes | yes | no | no |
| Mailbox MCP | Freemium · from £2.92/month per mailbox (paid annually at £34.99 + VAT) | yes | yes | yes | — | no |
| Postman | Freemium · from $9 | yes | yes | yes | yes | no |
| MailerSend | Freemium | yes | yes | yes | yes | no |
| GoodSign MCP Server | Usage-based · from $1.50 per document (credit); included with any paid GoodSign account | no | yes | yes | yes | no |
| Mailjet | Freemium | yes | yes | yes | yes | no |
| Ausca | Usage-based | — | yes | yes | yes | — |
| Sending | Freemium · from €0/mo (free tier: 3,000 emails/mo) | yes | yes | yes | yes | no |
| Atomic Mail | Free | yes | yes | yes | yes | — |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/postalform/alternatives