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Hookdeck vs MailSlurp

Hookdeck focuses on event routing, while MailSlurp provides full email/SMS inbox and testing capabilities.
HookdeckA reliable event gateway for event-driven applicationsMailSlurpTest, build, and automate email and SMS

Side by side

What it is
Hookdeck:Hookdeck provides a reliable event gateway to receive, process, and deliver webhooks with routing, filtering, transformation, and rate-limiting.
MailSlurp:MailSlurp provides programmable email addresses and phone numbers with APIs, SDKs and dashboards for testing and automating email and SMS workflows.
Best for
Hookdeck:Scalable webhook routing and observability
MailSlurp:Programmable email & SMS testing
Who it’s for
Hookdeck:Developers and teams building event-driven applications that rely on webhooks.
MailSlurp:Developers and QA engineers building, testing or automating email and SMS flows.
Pricing
Hookdeck:Freemium
MailSlurp:Freemium
Plans
Hookdeck:Developer $0 /month · Team $39 /month · Growth $499 /month
MailSlurp:Free Free · Starter Free
Works with
Hookdeck:Slack, Discord, Microsoft Teams, PagerDuty, Opsgenie, Better Stack, Uptime, incident.io
MailSlurp:Playwright, Cypress, Selenium, k6, JMeter, HubSpot, Braze, Brevo
DevHunt upvotes
Hookdeck:30
MailSlurp:3
Launched on DevHunt
Hookdeck:Mar 2024
MailSlurp:Sep 2024

Hookdeck features

  • Receive & Debug Webhooks. Capture inbound webhooks locally or in the cloud with full observability.
  • Filter, Transform & Route. Apply custom filters, transformations and routing rules before delivery.
  • Queue with Rate Control. Manage delivery spikes with back-pressure handling and rate-limiting.
  • Auto-detect Issues & Replay. Detect failing events, get alerts and replay missed deliveries.
  • Outpost Delivery Platform. Add managed webhook delivery to your API or SaaS with tenant and subscription management.
  • Metrics & Alerts. Monitor latency, throughput and error rates; receive alerts for third-party latency.
  • Secure & Compliant. SOC2 compliance and optional HIPAA, SSO, SCIM for higher plans.
  • CLI & Console Tools. Command-line interface for local testing and a web console for payload inspection.
Hookdeck on DevHunt →Alternatives

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.
MailSlurp on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.