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Marketing · head to head

Mailgun vs WebEngage

Mailgun logo

Mailgun

Marketing

Email delivery built for developers

From
Free
Rated
-
Full reviewWebsite
WebEngage logo

WebEngage

Marketing

Customer engagement and retention automation for consumer businesses in India and Southeast Asia

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Mailgun has a free tier, so it costs nothing to try first.
  • Each has a real cost: Mailgun free tier limited to 100 emails per day, restricting high-volume use cases; WebEngage nothing about pricing is published, and since the entire commercial argument for WebEngage is that it undercuts Braze and CleverTap, you cannot evaluate the one thing that makes it interesting without entering a sales process.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Mailgun and WebEngage actually diverge.

Attributes where Mailgun and WebEngage differ
AttributeMailgunWebEngage
Starting priceFreeOn request
Pricing modelsubscriptionquote
Free tierYesNo
PlatformsWebWeb, iOS SDK, Android SDK, React Native, Flutter, API

Identical on both: 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 WebEngage does not also cover.

Only in WebEngage

  • Journey designer
  • Behavioural segmentation
  • Push and in-app
  • WhatsApp
  • Analytics
  • Personalisation
  • On-site surveys
  • Customer data platform

What people use each for

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

Mailgun

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

WebEngage

  • A consumer app in India or Southeast Asia with several million monthly users needs Braze-class journey automation at a price its marketing budget can absorb.not Mailgun
  • A fintech or edtech business needs WhatsApp as a primary retention channel rather than a secondary one, in a market where email open rates are low and WhatsApp is universal.not Mailgun
  • A media or ecommerce company wants behavioural segmentation and lifecycle journeys without building a customer data platform separately first.not Mailgun
  • A team wants funnels, cohorts and retention analysis in the same tool that sends the messages, so the analyst and the campaign manager are not reconciling two systems.not 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

WebEngage

  • Nothing about pricing is published, and since the entire commercial argument for WebEngage is that it undercuts Braze and CleverTap, you cannot evaluate the one thing that makes it interesting without entering a sales process.
  • Message volumes across email, SMS and WhatsApp are metered separately from the platform fee, so a campaign that succeeds increases the bill in ways the monthly tracked user figure does not capture.
  • It requires genuine engineering investment to instrument events and user attributes correctly, and a poorly instrumented deployment produces segments that are wrong rather than merely incomplete, which is expensive to discover after launch.
  • Enterprise assurance is lighter than the American incumbents: procurement teams expecting extensive compliance documentation, regional data residency guarantees and 24 hour follow-the-sun support may find gaps.
  • Its centre of gravity is India, Southeast Asia and the Middle East, so partner availability, agency expertise and support hours all favour those regions and a European or North American buyer is a peripheral customer.

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

WebEngage

On request
  • WebEngage$undefined/year
    • Priced by monthly tracked users and channels enabled
    • Journeys, segmentation and analytics included
    • Email, SMS and WhatsApp volumes charged separately

Which should you pick?

Choose Mailgun if

  • You want to start without paying.
Mailgun review

Choose WebEngage if

  • You need journey designer.
  • You work on Web, iOS SDK, Android SDK, React Native, Flutter, API.
  • You also want behavioural segmentation.
WebEngage review

Questions people ask

Is Mailgun or WebEngage better?
Neither clearly leads. Mailgun starts at Free and WebEngage at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mailgun or WebEngage?
Mailgun has a free tier; the other does not. Paid plans start at Free for Mailgun and On request for WebEngage.
Does Mailgun or WebEngage run on more platforms?
Mailgun runs on Web. WebEngage runs on Web, iOS SDK, Android SDK, React Native, Flutter, API.
Can I use Mailgun for free?
Yes. Mailgun has a free tier, so you can try it without paying. WebEngage starts at On request.
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 WebEngage is typically brought in for.
What can Mailgun do that WebEngage cannot?
WebEngage covers Journey designer, Behavioural segmentation, Push and in-app, WhatsApp.

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
WebEngage: How much does WebEngage cost?

It does not publish pricing. It is quoted by monthly tracked users with message volumes charged separately, and it typically comes in below Braze and CleverTap for equivalent volumes.

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
WebEngage: Is it a CDP or a marketing automation tool?

Both, in practice. It assembles unified user profiles from event streams and then acts on them, though it is lighter than a dedicated CDP on data warehousing and identity resolution.

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
WebEngage: Is WebEngage owned by anyone else?

No. It remains an independent Mumbai-based company.

WebEngage: Which channels does it support?

Mobile push, in-app, web push, email, SMS and WhatsApp, with WhatsApp treated as a first-class channel rather than an add-on.

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