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Firecamp vs MailSlurp
Short answer: Pick Firecamp if you want all-in-one API testing and collaboration; pick MailSlurp if you want programmable email & SMS testing. Firecamp is free and open source; MailSlurp has a free plan.
Which to pick
Pick Firecamp if you want…
- All-in-one API testing and collaboration
- API testing and debugging
- A free, open-source tool
- Integrations with VSCode, REST or GraphQL (on Firecamp's list, not MailSlurp's)
Pick MailSlurp if you want…
- Programmable email & SMS testing
- Integrations with Playwright, Cypress or Selenium (on MailSlurp's list, not Firecamp's)
Side by side
- What it is
- Firecamp:Firecamp is an open-source, VSCode-driven tool for building, testing and collaborating on REST, GraphQL, WebSocket and SocketIO APIs.
- MailSlurp:MailSlurp provides programmable email addresses and phone numbers with APIs, SDKs and dashboards for testing and automating email and SMS workflows.
- Best for
- Firecamp:All-in-one API testing and collaboration
- MailSlurp:Programmable email & SMS testing
- Who it’s for
- Firecamp:Developers who need a unified API testing and collaboration platform.
- MailSlurp:Developers and QA engineers building, testing or automating email and SMS flows.
- Pricing
- Firecamp:Open source
- MailSlurp:Freemium
- Starting price
- Firecamp:Free
- MailSlurp:—
- Free plan or trial
- Firecamp:Free to use
- MailSlurp:Free plan (Free) · Free trial
- Plans
- Firecamp:—
- MailSlurp:Free Free · Starter Free
- Open source
- Firecamp:Yes
- MailSlurp:—
- Works with
- Firecamp:VSCode, REST, GraphQL, WebSocket, SocketIO
- MailSlurp:Playwright, Cypress, Selenium, k6, JMeter, HubSpot, Braze, Brevo
Firecamp features
- VSCode-driven DX. Provides a developer experience integrated with Visual Studio Code.
- End-to-end API testing. Supports testing of REST, GraphQL, WebSocket and SocketIO endpoints.
- API collection collaboration. Teams can share and collaborate on API collections within the platform.
- Unified playgrounds. Create dedicated playgrounds for REST, GraphQL, WebSocket and SocketIO APIs.
- Guest mode. Allows limited testing without an account, with full features unlocked after sign-up.
- Open-source core. Available as an open-source alternative to Postman on GitHub.
MailSlurp features
- Programmable inboxes. Create unlimited temporary or permanent email inboxes, use custom domains or connect Gmail/Outlook via API, SMTP, IMAP and webhooks.
- Programmable phone numbers. Provision real mobile numbers for SMS, OTP and MFA, receive texts and route them into applications.
- Device rendering & inbox placement. Preview emails on real clients and devices, audit links and images, and test inbox or spam placement.
- AI data extraction. Convert emails, PDFs and attachments into structured JSON using prompts, schemas and OCR.
- Shared dashboards & enterprise access. Manage inboxes, numbers and results with roles, SSO, SCIM, audit logs and team permissions.
- Load & scale testing. Use inbox pools with k6, JMeter or Locust to verify message delivery under load.
- Webhooks & automation. Trigger webhooks, forwarding, automatic replies and integrate with Zapier, MCP and other automation tools.
- SDKs & REST API. Official SDKs for JavaScript, TypeScript, Python, Java, C#, PHP and direct REST API access.
Firecamp vs MailSlurp FAQ
What is the difference between Firecamp and MailSlurp?+
Firecamp is an API client similar to Postman, whereas MailSlurp is a programmable email/SMS testing platform.
Should I use Firecamp or MailSlurp?+
Pick Firecamp if you want all-in-one API testing and collaboration, API testing and debugging or a free, open-source tool. Pick MailSlurp if you want programmable email & SMS testing or integrations with Playwright, Cypress or Selenium (on MailSlurp's list, not Firecamp's).
Is Firecamp or MailSlurp free?+
Firecamp is free and open source. MailSlurp has a free plan and paid plans.
Is Firecamp or MailSlurp open source?+
Firecamp is open source (FirecampDev/Firecamp on GitHub). DevHunt has no public source repository on record for MailSlurp.
Do Firecamp and MailSlurp integrate with the same tools?+
Their integration lists don't overlap: Firecamp lists VSCode, REST, GraphQL, WebSocket and 1 more; MailSlurp lists Playwright, Cypress, Selenium, k6 and 10 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.