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Honest comparison

Inboxical vs MailHog Managed API vs abandoned SMTP server.

MailHog is a free, self-hosted SMTP testing tool — but it hasn't been updated since 2020. Inboxical is an actively maintained email testing API with SDKs, long-polling, and OTP extraction.

Why teams move from MailHog

MailHog works locally but struggles in modern CI/CD pipelines.

No infrastructure to manage

No Docker containers, no port forwarding, no self-hosted servers to maintain.

Purpose-built SDKs

Playwright and Cypress SDKs with inbox creation, message waiting, and assertions.

Long-polling wait

Block until the email arrives. No cy.wait(3000) or polling loops.

Active development

Actively maintained and updated. MailHog hasn't had a commit since 2020.

Feature-by-feature comparison

Different tools for different jobs. Here is how they stack up for test automation.

FeatureInboxicalMailHog
Playwright SDK
Cypress SDK
OTP extraction
Long-polling wait
WebhooksStarter+
REST API
SMTP supportComing soon
Web UI
Self-hostedComing soon
CI/CD readyDIY setup
Actively maintainedSince 2020 ✗
Free tier$0 (50/mo)Free (self-hosted)
Starting paid price$9/moFree only

Same test, both tools

With Inboxical, you get a purpose-built SDK. With MailHog, you write manual API calls.

Inboxical
// Inboxical — Cypress test
it('sends welcome email', () => {
cy.createInbox().then((inbox) => {
cy.visit('/register')
cy.get('[name=email]').type(inbox.email_address)
cy.get('[type=submit]').click()
// Long-polls — no arbitrary waits
cy.waitForMessage(inbox.id).then((msgs) => {
expect(msgs[0].subject).to.equal('Welcome!')
// OTP extraction built in
const otp = msgs[0].extracted_otp
expect(otp).to.have.length(6)
})
})
})
MailHog
// MailHog — self-hosted, manual API
it('sends welcome email', () => {
// Requires MailHog running in Docker
// docker run -p 1025:1025 -p 8025:8025 mailhog/mailhog
cy.visit('/register')
cy.get('[name=email]').type('[email protected]')
cy.get('[type=submit]').click()
// Poll MailHog HTTP API
cy.wait(3000) // hope email arrived
cy.request({
url: 'http://localhost:8025/api/v2/messages',
}).then((res) => {
const msg = res.body.items[0]
expect(msg.Content.Headers.Subject[0])
.to.equal('Welcome!')
// No OTP extraction — parse raw body
const body = msg.Content.Body
const otp = body.match(/\d{6}/)[0]
expect(otp).to.have.length(6)
})
})

The honest take

Different tools excel at different things. Here is the full picture.

Where MailHog wins

  • Completely free and open source
  • Full control over infrastructure
  • Works offline with no external dependencies
  • Simple Docker setup for local development

Where Inboxical wins

  • No infrastructure to manage or maintain
  • Playwright and Cypress SDKs
  • Long-polling — no polling loops
  • OTP extraction built in
  • Actively maintained and updated
  • Works in any CI/CD without Docker setup

If you want a quick local SMTP server for development and don't mind managing infrastructure, MailHog works. If you want a reliable, maintained email testing API that works everywhere — including CI/CD — Inboxical is the better choice.

Start free — no credit card required.

Try Inboxical with 50 emails/month on the free plan. Get Playwright and Cypress SDKs from day one.