What the evidence answers

A reading of reviewed official documentation for Mailgun and Resend. It is not a hands-on test, a ranking or a recommendation of one product.

Price

  • Mailgun From $15/mo
    • Free: no subscription charge
    • Basic: $15.00 monthly
    • Foundation: $35.00 monthly
    • Scale: $90.00 monthly
    • Enterprise: Vendor quotation required
  • Resend From $20/mo
    • Free: no subscription charge
    • Pro: $20.00 monthly
    • Scale: $90.00 monthly
    • Enterprise: Vendor quotation required

Both list prices on the same basis. Compare what each plan includes; the lower amount alone does not make the better choice.

Documented for both

Sending volume
Mailgun Free: 100 emails per dayBasic: 10,000 emails per monthFoundation: 50,000 emails per monthScale: 100,000 emails per month
Resend Paid plans have no daily cap, but received emails and every To, CC and BCC recipient count toward the monthly quota.Free: 3,000 emails per monthPro: 50,000 emails per monthScale: 100,000 emails per month
Sender domains
Mailgun Free: 1 custom sending domainBasic: 1 custom sending domainFoundation: 1,000 custom sending domainsScale: 1,000 custom sending domains
Resend Pro and Scale can add 100 more domains for USD 20 a month; Enterprise limits are set by contract.Free: 3 verified domainsPro: 10 domainsScale: 1,000 domains
Log retention
Mailgun Free: 1 day of logsBasic: 1 day of logsFoundation: 5 days of logsScale: 30 days of logs
Resend Free and Pro: 30-day data retention.Scale: 30 days
Webhooks and events
Mailgun Tracking, analytics and webhooks are listed from the Free plan up.
Resend Pro: 5 webhook endpoints.Free: 1 webhook endpointScale: 10 webhook endpoints
Dedicated IP
Mailgun Extra dedicated IPs cost USD 59 per IP a month.Foundation: Available from the 50,000-email tier; one IP included from 100,000 emails a monthScale: One dedicated IP included, plus dedicated IP pools
Resend USD 30 a month add-on on Scale for customers sending more than 3,000 emails a day; Resend warms up, monitors and scales the IP.
Support
Mailgun Ticket, chat and phone support depend on the plan.Free: Ticket supportScale: Live phone and chat support
Resend Slack support and an urgent-response SLA are not included on Free or Pro.Free: Ticket supportScale: Dedicated Slack channelEnterprise: Guaranteed response times, a dedicated CSM and personalized migration support
Overage charges
Mailgun Extra emails are billed at the start of each month for the previous month, together with the plan fee.
Resend Paid plans can keep sending past the monthly quota with pay-as-you-go, capped by default at 5 times the quota; sending then pauses until the next billing cycle.Pro: Pay-as-you-go is switched on in team settings and bills extra emails in buckets of 1,000; without it, Resend notifies you and offers an upgrade.

Limits to check

  • Mailgun Free and Basic allow 1 custom sending domain and 1 day of logs; Foundation raises this to 1,000 domains and 5 days, and Scale keeps 30 days.
  • Resend Every account starts at 10 API requests per second, whatever the plan; an increase goes through support.

Not verified yet

Every compared requirement has evidence for at least one.

Not verified means our reviewed sources do not establish it. It does not mean a product lacks the capability or that it costs nothing.

Next steps

Documented scope and limits; unverified dimensions remain unknown.
RequirementMailgunResend
Pricing
Who it is for
Sends application email through an HTTP API or an SMTP endpoint.

Verified Oct 11, 2026 · Mailgun: official product and plan documentation

Sends application email, such as password resets and order confirmations, through the /emails API; marketing broadcasts use a separate API.

Verified Oct 11, 2026 · Resend: official product and plan documentation

Coverage limits
Free and Basic allow 1 custom sending domain and 1 day of logs; Foundation raises this to 1,000 domains and 5 days, and Scale keeps 30 days.

Verified Oct 11, 2026 · Mailgun: official product and plan documentation

Every account starts at 10 API requests per second, whatever the plan; an increase goes through support.

Verified Oct 11, 2026 · Resend help: account quotas and limits

Sending volume
  • Free 100 emails per day
  • Basic 10,000 emails per month
  • Foundation 50,000 emails per month
  • Scale 100,000 emails per month
Paid plans have no daily cap, but received emails and every To, CC and BCC recipient count toward the monthly quota.

Verified Oct 11, 2026 · Resend help: account quotas and limits

  • Free 3,000 emails per month
  • Pro 50,000 emails per month
  • Scale 100,000 emails per month
Sender domains
  • Free 1 custom sending domain
  • Basic 1 custom sending domain
  • Foundation 1,000 custom sending domains
  • Scale 1,000 custom sending domains
Pro and Scale can add 100 more domains for USD 20 a month; Enterprise limits are set by contract.

Verified Oct 11, 2026 · Resend help: account quotas and limits

  • Free 3 verified domains
  • Pro 10 domains
  • Scale 1,000 domains
Log retention
  • Free 1 day of logs
  • Basic 1 day of logs
  • Foundation 5 days of logs
  • Scale 30 days of logs
Free and Pro: 30-day data retention.

Verified Oct 11, 2026 · Resend: official product and plan documentation

  • Scale 30 days
Webhooks and events
Tracking, analytics and webhooks are listed from the Free plan up.

Basic, Foundation and Scale cards list them too.

Verified Oct 11, 2026 · Mailgun: official product and plan documentation

Pro: 5 webhook endpoints.

Verified Oct 11, 2026 · Resend: official product and plan documentation

  • Free 1 webhook endpoint
  • Scale 10 webhook endpoints
Dedicated IP
Extra dedicated IPs cost USD 59 per IP a month.

Verified Oct 11, 2026 · Mailgun: official product and plan documentation

  • Foundation Available from the 50,000-email tier; one IP included from 100,000 emails a month
  • Scale One dedicated IP included, plus dedicated IP pools
USD 30 a month add-on on Scale for customers sending more than 3,000 emails a day; Resend warms up, monitors and scales the IP.

Verified Oct 11, 2026 · Resend: official product and plan documentation

Support
Ticket, chat and phone support depend on the plan.

Verified Oct 11, 2026 · Mailgun: official product and plan documentation

  • Free Ticket support
  • Scale Live phone and chat support
Slack support and an urgent-response SLA are not included on Free or Pro.

Verified Oct 11, 2026 · Resend: official product and plan documentation

  • Free Ticket support
  • Scale Dedicated Slack channel
  • Enterprise Guaranteed response times, a dedicated CSM and personalized migration support
Overage charges
Extra emails are billed at the start of each month for the previous month, together with the plan fee.

The first month is prorated.

Verified Oct 11, 2026 · Mailgun: official product and plan documentation

Paid plans can keep sending past the monthly quota with pay-as-you-go, capped by default at 5 times the quota; sending then pauses until the next billing cycle.

Support can adjust the cap.

Verified Oct 11, 2026 · Resend help: account quotas and limits

  • Pro Pay-as-you-go is switched on in team settings and bills extra emails in buckets of 1,000; without it, Resend notifies you and offers an upgrade.
Coverage note

Starting allowance.

All webhook event types are available on every plan.

Choose two or three products.