Apidog vs MachineMail
Apidog and MachineMail are both developer tools tools aimed at developers and small businesses. MachineMail costs less, from $9/mo versus $12/mo for Apidog. Both have a free plan.
All-in-one API design, testing, mocking and docs; a Postman rival
Email API and MCP server that gives AI agents inboxes of their own
| Pricing | Freemium · $12 | Freemium · $9 |
| Starting price | $12/mo | $9/mo |
| Free plan | Yes | Yes |
| Free trial | 14 days | — |
| Built for | Developers, Small businesses, Enterprise | Developers, Small businesses |
| Platforms | web, macos, windows, linux | web |
| Country | — | — |
| Rating | — | — |
Choose Apidog if
Small and mid-size engineering teams that want one spec-first tool for API design, debugging, testing, mocking and docs at a lower per-seat cost than Postman.
- Replaces several tools with one spec-first workspace
- Free for up to four users; paid seats cost less than Postman
- Imports Postman, Insomnia, OpenAPI, HAR, cURL and WSDL
Look elsewhere if: Companies whose main need is a polished public developer portal or strict design governance (ReadMe, Mintlify, Stoplight).
Choose MachineMail if
Developers building AI agents that need their own email addresses and a safe way to read untrusted inbound mail.
- Unlimited inboxes are free on every plan
- Trust layer addresses prompt injection and phishing in email
- AgentMail-compatible API makes switching a config change
Look elsewhere if: Teams that only need to send transactional or marketing email from an app (Resend).
Apidog vs MachineMail pricing
Apidog
- Free$0Up to 4 users; design, debug, test, mock and docs
- Basic$12/user/mo$9/user/mo billed annually; 3 custom domains
- Professional$24/user/mo$18/user/mo billed annually; unlimited change history
- Enterprise$27/user/moBilled annually; SSO, organizations; on-prem separately
MachineMail
- Free$03,000 messages/mo (100/day), 1 GB, 1 custom domain, 1 seat
- Pro$9/mo7,500 inbound, 2,500 outbound, 10 GB, 10 domains, unlimited seats
- Team$49/mo45,000 inbound, 15,000 outbound, 30 GB, 50 domains, unlimited seats
- Scale$199/mo200,000 inbound, 65,000 outbound, 150 GB, 250 domains, Slack support
Apidog · Key features
- Visual OpenAPI and JSON Schema designer with change history
- Request client for HTTP, GraphQL, gRPC, WebSocket, SOAP and SSE
- Postman-compatible pre and post scripts and database connections
- Visual test scenarios, scheduled runs and performance testing
- Schema-driven smart mocks, cloud mock and self-hosted runner mock
- Interactive API docs with custom domains and free readers
Cons
- Interface is dense and takes time for non-technical users
- Public docs portals are less polished than ReadMe or Mintlify
- Smaller community and plugin ecosystem than Postman
MachineMail · Key features
- Free inboxes on machinemail.dev or your own domains, ephemeral or permanent
- Trust report and level on every inbound message
- Agent-safe text with hidden text and zero-width characters removed
- Hosted MCP server with 17 tools, including wait_for_message
- Catch-all domains that create an inbox on first delivery
- Pods and scoped API keys to separate customers or agents
Cons
- New service that publishes no team, legal entity or address on its site
- Free plan caps mail at 100 messages a day
- No annual pricing listed
Apidog vs MachineMail: FAQ
Which is cheaper, Apidog or MachineMail?
MachineMail starts at $9/mo and Apidog at $12/mo. Both prices are checked on the vendors' own pricing pages.
Do Apidog and MachineMail have a free plan?
Yes, both Apidog and MachineMail have a free plan; paid plans add more usage and features.