Sites like Mailgun

01 · Entity

About Mailgun

Mailgun mailgun.net

Transactional Email API Service For Developers | Mailgun

Powerful Transactional Email APIs that enable you to send, receive, and track emails, built with developers in mind. Learn more today!

Top 10K · #5,246 English 14 technologies Crawled Nov 6, 2026

Visit Mailgun

Summary by Claude

Mailgun provides an email API and SMTP service for developers to send, receive and track transactional and bulk email. It also offers deliverability optimization, email list validation and email preview/testing tools.

Who it’s for

Software developers and businesses

Business model

Subscriptions

• transactional email service
• transactional email API
• SMTP relay
• email deliverability
• email validation
• inbound email routing
• email tracking and analytics
• email preview testing

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Mailgun’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.

1. 01
   Sender Score senderscore.com Top 10K English

   Sender Score - Email Marketing Education and Free Tools

   Email doesn't have to be complicated. Assess where you are today, learn how to improve, and leverage free tools and education.

   • Cloudflare
   • Google Tag Manager
   • OneTrust
   • PHP
   • Amazon Route 53
   • WordPress

   0 say Sender Score is a good alternative to Mailgun 0 say Sender Score isn’t a real alternative to Mailgun

   Comment
   Very close cos 0.897
2. 02
   Sendsay sendsay.ru Top 10K Russian

   CDP Sendsay – омниканальная платформа клиентских данных и автоматизации маркетинга

   Платформа Sendsay – омниканальная CDP для управления клиентскими данными (Customer Data Platform), автоматизации маркетинга и повышения продаж.

   • GlobalSign
   • nginx
   • Yandex Metrica

   0 say Sendsay is a good alternative to Mailgun 0 say Sendsay isn’t a real alternative to Mailgun

   Comment
   Close cos 0.883
3. 03
   MailerLite mailerlite.com Top 10K English

   Create Email Marketing Your Audience Will Love - MailerLite

   Digital marketing tools to grow your audience faster and drive revenue smarter. Backed by 24/7 award-winning support. Check it out now!

   • Cloudflare
   • Zoom
   • Algolia
   • Cloudflare DNS
   • Google Cloud
   • Google Search Console

   0 say MailerLite is a good alternative to Mailgun 0 say MailerLite isn’t a real alternative to Mailgun

   Comment
   Close cos 0.881
4. 04
   mail.com Top 10K English

   Free email accounts | Register today at mail.com

   Email how it is supposed to be: ✔ Free, simple and secure ✔ Manage multiple mail accounts in one place, from any device ✔ Sign up today!

   • Google Tag Manager
   • Google Search Console
   • Meta Business Suite
   • nginx

   0 say mail.com is a good alternative to Mailgun 0 say mail.com isn’t a real alternative to Mailgun

   Comment
   Close cos 0.884
5. 05
   Mailchimp mailchimp.com Top 1K English

   Email & SMS Marketing Platform | Mailchimp

   Utilize real-time user behavior data and artificial intelligence to convert more customers. Easy to use, get started for free!

   • OneTrust
   • Adobe
   • Adobe Experience Manager
   • Akamai
   • Akamai Bot Manager
   • Akamai Edge DNS

   0 say Mailchimp is a good alternative to Mailgun 0 say Mailchimp isn’t a real alternative to Mailgun

   Comment
   Close cos 0.878
6. 06
   Fastmail fastmail.com English

   Email and calendar made better | Fastmail

   Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

   • Cloudflare
   • Fastmail

   0 say Fastmail is a good alternative to Mailgun 0 say Fastmail isn’t a real alternative to Mailgun

   Comment
   Close cos 0.880
7. 07
   Temp Mail temp-mail.org Top 10K English

   Website

   • Cloudflare
   • Cloudflare DNS
   • Cloudflare Web Analytics
   • Google Search Console

   0 say Temp Mail is a good alternative to Mailgun 0 say Temp Mail isn’t a real alternative to Mailgun

   Comment
   Close cos 0.874
8. 08
   beehiiv beehiiv.com Top 10K English

   Newsletter Platform: Create Newsletters and Websites - beehiiv

   beehiiv is the newsletter platform built for creators, publishers, and businesses. Grow, publish, and monetize your audience in one place.

   • Cloudflare
   • Apple Business
   • Atlassian
   • Cloudflare DNS
   • Google Search Console
   • Google Workspace

   0 say beehiiv is a good alternative to Mailgun 0 say beehiiv isn’t a real alternative to Mailgun

   Comment
   Close cos 0.871
9. 09
   WeTransfer wetransfer.com Top 10K English

   WeTransfer | Skicka stora filer snabbt

   Det enkla, snabba och säkra sättet att skicka filer till hela världen utan ett konto. Dela filer, foton och videor idag helt gratis.

   • Microsoft Advertising UET
   • OneTrust
   • Amazon Route 53
   • Zoom
   • Adobe
   • Amazon Publisher Services

   0 say WeTransfer is a good alternative to Mailgun 0 say WeTransfer isn’t a real alternative to Mailgun

   Comment
   Close cos 0.873
10. 10
    Customer customer.io Top 10K English

    Customer.io: Customer Engagement Platform For Better Outcomes

    Customer.io is a customer engagement platform for creating personalized journeys and better business outcomes across email, push, SMS, and in-app messaging.

    • Google Tag Manager
    • Amazon Route 53
    • Amazon SES
    • DocuSign
    • Google Search Console
    • Google Workspace

    0 say Customer is a good alternative to Mailgun 0 say Customer isn’t a real alternative to Mailgun

    Comment
    Close cos 0.872
11. 11
    Postman postman.com Top 10K

    API development platform

    • Amazon Route 53
    • Apple Business
    • Atlassian
    • DocuSign
    • Google Search Console
    • Google Workspace

    0 say Postman is a good alternative to Mailgun 0 say Postman isn’t a real alternative to Mailgun

    Comment
    Close cos 0.868
12. 12
    PubNub pubnub.com Top 10K English

    Build, manage, & optimize real-time apps at scale | PubNub

    Power your real-time app with PubNub - the world's largest pub/sub network. Scale to 3 trillion API calls/month, with <30ms global delivery. Start building now!

    • OneTrust
    • Apple Business
    • Fastly
    • GlobalSign
    • Google Search Console
    • Google Workspace

    0 say PubNub is a good alternative to Mailgun 0 say PubNub isn’t a real alternative to Mailgun

    Comment
    Close cos 0.869
13. 13
    Brevo brevo.com Top 10K English

    Brevo: Email & SMS Marketing, CRM & Automation Platform

    Brevo is the most intuitive all-in-one customer engagement platform: email and SMS marketing, automation, CRM, live chat, and transactional email. Try it free.

    • Cloudflare
    • PHP
    • WordPress
    • Atlassian
    • Brevo
    • Cloudflare DNS

    0 say Brevo is a good alternative to Mailgun 0 say Brevo isn’t a real alternative to Mailgun

    Comment
    Close cos 0.865
14. 14
    Constant Contact constantcontact.com Top 10K English

    digital marketing platform

    • Cloudflare
    • OneTrust
    • Zoom
    • Atlassian
    • Canva
    • DocuSign

    0 say Constant Contact is a good alternative to Mailgun 0 say Constant Contact isn’t a real alternative to Mailgun

    Comment
    Close cos 0.864
15. 15
    Twilio twilio.com Top 10K English

    Conversational AI and APIs for SMS, Email, Voice | Twilio

    Build amazing customer experiences on the Twilio platform with APIs for SMS, RCS, voice, and email, plus conversational AI for smarter engagement, and identity verification for trust.

    • Google Tag Manager
    • OneTrust
    • Amazon Route 53
    • Adobe
    • Adobe Experience Manager
    • Adobe Experience Platform Tags

    0 say Twilio is a good alternative to Mailgun 0 say Twilio isn’t a real alternative to Mailgun

    Comment
    Close cos 0.865
16. 16
    iterable.com Top 10K English

    AI Customer Engagement Platform for Real-Time, Personalized Experiences

    Iterable is an AI customer engagement platform built for how customers behave today, helping brands respond in real time with unified data and optimization.

    • Google Tag Manager
    • PHP
    • Amazon Route 53
    • WordPress
    • Zoom
    • Adobe Fonts

    0 say iterable.com is a good alternative to Mailgun 0 say iterable.com isn’t a real alternative to Mailgun

    Comment
    Close cos 0.864
17. 17
    Medallia medallia.com Top 10K English

    Experience Management Software Platform – Medallia – Experience Management Software

    Medallia's software platform provides keen insights to improve customer experience, contact center experience, employee experience and digital experience.

    • Cloudflare
    • Google Tag Manager
    • PHP
    • Amazon Route 53
    • WordPress
    • WP Engine

    0 say Medallia is a good alternative to Mailgun 0 say Medallia isn’t a real alternative to Mailgun

    Comment
    Close cos 0.864
18. 18
    WebEngage webengage.com Top 10K English

    WebEngage | Customer Data and Agentic Marketing Platform

    Unify customer data and run AI-powered, personalized journeys across channels with WebEngage’s customer data platform and marketing automation suite.

    • Google Tag Manager
    • PHP
    • Amazon Route 53
    • WordPress
    • Amazon SES
    • Apple Business

    0 say WebEngage is a good alternative to Mailgun 0 say WebEngage isn’t a real alternative to Mailgun

    Comment
    Close cos 0.864
19. 19
    Sendbird sendbird.com Top 10K English

    The AI customer experience platform for enterprise | Sendbird

    Engage your customers and improve customer loyalty with an AI customer experience platform trusted by enterprises worldwide.

    • Google Analytics
    • Google Tag Manager
    • OneTrust
    • Amazon Route 53
    • Zoom
    • Adobe

    0 say Sendbird is a good alternative to Mailgun 0 say Sendbird isn’t a real alternative to Mailgun

    Comment
    Close cos 0.863
20. 20
    myworkday.com Top 10K English

    Page not found.

    • PHP
    • Apache HTTP Server
    • Drupal
    • Google Search Console
    • jQuery
    • Microsoft 365

    0 say myworkday.com is a good alternative to Mailgun 0 say myworkday.com isn’t a real alternative to Mailgun

    Comment
    Close cos 0.863

Ranked by score: the cosine similarity of each site’s vector to mailgun.net’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones Mailgun uses too. Votes and comments come from visitors and don’t change the ranking.

04 · Fingerprints

Technology

What Mailgun is built with, and what its closest competitors use, from its homepage’s code and its DNS records.