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RocketVerifier vs Mailgun Validate

The best Mailgun Validate alternative

Verification without a sending or Optimize plan: pay only for usable results, with catch-all verdicts and automatic bounce refunds.

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100 free credits · No card required

Why teams switch from Mailgun Validate

  • No sending or Optimize plan required. Buy credits once, and they never expire.
  • Unknown results are never charged, and every catch-all address gets a send_safe, send_with_caution or avoid verdict.
  • Bounces on deliverable results are refunded automatically, and you can connect Mailgun itself to do it.
  • 100 free credits instantly, RocketShield form protection and a hosted MCP server, on every plan.

Side by side

RocketVerifier vs Mailgun Validate

What you get for every credit, with Mailgun Validate's terms taken from its own published pages.

RocketVerifier compared with Mailgun Validate
Compare RocketVerifier Mailgun Validate
Unknown results Never charged, and duplicates in a list are free too Billing of unknown results is not documented. source
Bounce refunds Automatic: every hard bounce on a deliverable result is refunded within 30 days when you connect SendGrid, Mailgun, Amazon SES or Postmark No bounce guarantee is published.
Catch-all addresses Every one scored 0 to 100 with a send_safe, send_with_caution or avoid verdict, in the standard 1 credit Catch-all addresses return a catch_all result, with no send verdict. source
MCP server for AI agents Hosted MCP server for Claude, ChatGPT, Cursor and any MCP client, plus a local npm package An open-source MCP server you run locally; no hosted version. source
OAuth for third-party apps RocketVerifier Connect: apps connect in one click and verify on the user's own credits No OAuth app platform for third-party developers is published on Mailgun's site.
Free credits 100 free credits instantly, no card required No standing free validation allowance; Optimize plans offer the first month free. source
Credit expiry Pay-as-you-go credits never expire, and plan credits roll over Validations come as a monthly plan allowance or a sending-plan add-on. source
Form protection RocketShield, included on every plan No form widget; forms call the API. source
SPF, DKIM and DMARC Free lookups plus deliverability monitors with alerts, included Blocklist monitoring is part of the separate Optimize plans. source
See RocketVerifier pricing

Why RocketVerifier

The most accurate verifier, with everything included

99.5% accuracy, the fastest real-time API and the best verification infrastructure. No feature gating and no surprises on your invoice.

  • Pay only for usable results

    Unknown results and duplicate addresses are never charged. Connect your sending platform and every hard bounce on an address we marked deliverable is refunded automatically.

  • A verdict on every catch-all

    Accept-all addresses are scored 0 to 100 and get send_safe, send_with_caution or avoid, in the standard 1 credit.

  • The fastest real-time API

    Typically under 400ms, 1 to 3 seconds with a live SMTP check, and up to 100,000 emails per hour in bulk.

  • Built for AI agents

    A hosted MCP server for Claude, ChatGPT and Cursor, and RocketVerifier Connect OAuth for apps that verify on their users' credits.

  • Credits never expire

    Pay-as-you-go credits stay until you use them. Monthly and yearly plans roll unused credits over.

  • Everything on every plan

    RocketShield form protection, integrations, monitors, SDKs and the full API are included with every plan.

Migration

Switch in an afternoon

Move from Mailgun Validate without rebuilding your workflow. Verify a sample, see the difference, then switch over.

  1. Export from Mailgun Validate

    Download your list from Mailgun Validate as a CSV. Any column layout works.

  2. Upload to RocketVerifier

    Drop in a CSV, TSV, TXT or Excel file of up to 50 MB, map the email column and preview the result for free before you confirm.

  3. Download clean results

    Get status, sub_status, score, provider and catch-all verdict for every address, ready to import anywhere.

Calling Mailgun Validate from your own code? Build against a free rv_test_ sandbox key, then swap in your live key. Using HubSpot, Mailchimp, Zapier or another tool? Connect it in a few clicks from the integrations page.

FAQ

RocketVerifier vs Mailgun Validate FAQ

Common questions from teams moving from Mailgun Validate to RocketVerifier.

Can I use RocketVerifier with Mailgun?

Yes. Verify lists with RocketVerifier and keep sending through Mailgun. Connect Mailgun to RocketVerifier and every hard bounce on an address marked deliverable is refunded automatically and added to your suppression list.

Do I need a Mailgun plan to validate emails?

Mailgun lists validations as a sending-plan add-on or as part of its Optimize plans. RocketVerifier needs no plan: buy credits from $6 for 1,000, or start with 100 free credits.

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Mailgun Validate facts are taken from Mailgun Validate's own published pages, checked November 1, 2026. Sources: documentation.mailgun.com/docs/validate/single-valid-ir, mailgun.com/products/validate, mailgun.com/integrations/mcp-server, mailgun.com/pricing/optimize, mailgun.com/pricing, mailgun.com/features/email-validation-api.

Switch from Mailgun Validate today

Verify a sample of your list and see the difference. Unknowns are free, bounces are refunded and credits never expire.

Start free See pricing

100 free credits · No card required · Credits never expire