Softwr

Marketing · head to head

Mailgun vs VWO

Mailgun logo

Mailgun

Marketing

Email delivery built for developers

From
Free
Rated
-
Full reviewWebsite
VWO logo

VWO

Marketing

Experience Optimization Platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Mailgun free tier limited to 100 emails per day, restricting high-volume use cases; VWO growth plan restricted to 1 workspace and 0 custom attributes
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Mailgun and VWO actually diverge.

Attributes where Mailgun and VWO differ
AttributeMailgunVWO
Pricing modelsubscriptionusage-based
PlatformsWebWeb, iOS, Android, Server-side
FoundedUnknown2007

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Marketing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Mailgun

Nothing recorded that VWO does not also cover.

Only in VWO

  • A/B testing
  • Multivariate testing
  • Heatmaps
  • Session recordings
  • Analytics
  • Google Analytics
  • Slack
  • SSL encryption

What people use each for

The jobs each tool is most often brought in to do.

Mailgun

  • Transactional email delivery and SMTP relaynot VWO
  • Email marketing at scale for developers and enterprisesnot VWO

VWO

  • A/B testing and multivariate testingnot Mailgun
  • Conversion rate optimisationnot Mailgun
  • Behavioural analytics and session recordingsnot Mailgun
  • Feature experimentation and progressive rolloutsnot Mailgun

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Mailgun

  • Free tier limited to 100 emails per day, restricting high-volume use cases
  • Log retention minimal on lower tiers (1 day on Free and Basic plans)
  • Add-on pricing for email validations and extra emails can accumulate quickly for high-traffic users

VWO

  • Growth plan restricted to 1 workspace and 0 custom attributes
  • Single Sign-On (SSO) and API access limited to Enterprise tier only
  • Growth plan offers only 8-hour first response time for support

Pricing, plan by plan

Mailgun

Free
  • FreeFree
    • 100 emails per day
    • Basic APIs
    • SMTP relay
  • Basic$15/monthly
    • 10,000 emails per month
    • No daily limits
    • Monthly overage options
  • Foundation$35/monthly
    • 50,000 emails per month
    • 1,000 custom domains
    • Email template builder
  • Scale$90/monthly
    • 100,000 emails per month
    • SAML SSO
    • 5,000 email validations

VWO

Free

No published plan breakdown. See the VWO review.

Which should you pick?

Choose Mailgun if

  • You want to start without paying.
Mailgun review

Choose VWO if

  • You need a/b testing.
  • You want to start without paying.
  • You work on Web, iOS, Android, Server-side.
  • You also want multivariate testing.
VWO review

Questions people ask

Is Mailgun or VWO better?
Neither clearly leads. Mailgun starts at Free and VWO at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mailgun or VWO?
Mailgun starts at Free and VWO at Free.
Does Mailgun or VWO run on more platforms?
Mailgun runs on Web. VWO runs on Web, iOS, Android, Server-side.
Can I use Mailgun for free?
Both have a free tier, so you can try either at no cost before committing.
What is Mailgun best used for?
Mailgun is most often used for transactional email delivery and smtp relay, email marketing at scale for developers and enterprises. Of those, transactional email delivery and smtp relay and email marketing at scale for developers and enterprises are not what VWO is typically brought in for.
What can Mailgun do that VWO cannot?
VWO covers A/B testing, Multivariate testing, Heatmaps, Session recordings.

Answered from the vendors’ own pages

Mailgun: What happens when I exceed my monthly email quota?

Mailgun allows monthly overage options on paid plans. Extra emails are charged from $1.30 to $1.10 per 1,000 emails depending on plan tier. Enterprise customers negotiate custom rates.

Source
VWO: Is there a free trial available?

Free for 30 days. No credit card required to start the trial.

Source
Mailgun: Can I upgrade from Free to a paid plan and when does billing begin?

Yes, you can upgrade to paid plans anytime. The first month is free on Foundation ($35/month) and Scale ($90/month) plans, with billing starting on month two.

Source
VWO: Are there limits on users or metrics?

Run unlimited optimization at scale with no limit on variations, account users, metrics, session recordings, or integrations.

Source
Mailgun: What currencies and billing periods does Mailgun support?

Mailgun supports monthly billing in USD, EUR, and GBP. Charges are prorated for mid-month signups. Annual billing options are not explicitly listed on the pricing page.

Source
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