Sites like Sender Score

01 · Entity

About Sender Score

Sender Score senderscore.com

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.

Top 10K · #3,602 English 13 technologies Crawled Nov 6, 2026

Visit Sender Score

Summary by Claude

Free email deliverability tools and education, including an IP/domain sender reputation score, blocklist lookup, list validation, bounce diagnostics, and podcasts and courses on email marketing. Operated by Validity (formerly Return Path).

Who it’s for

Email marketers and senders

Business model

Lead generation for paid deliverability services

• email deliverability
• sender reputation score
• IP reputation check
• Return Path blocklist lookup
• email list validation
• bounce diagnostics
• complaint feedback loop
• subject line preview
• mailbox provider breakdown

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Sender Score’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
   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 Sender Score 0 say mail.com isn’t a real alternative to Sender Score

   Comment
   Very close cos 0.903
2. 02
   Mailgun mailgun.net Top 10K English

   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!

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

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

   Comment
   Very close cos 0.897
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
   • jsDelivr
   • Algolia
   • Cloudflare DNS
   • Google Cloud
   • Google Search Console

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

   Comment
   Close cos 0.893
4. 04
   Khan Academy khanacademy.org Top 10K English

   Client Challenge

   non-profit educational organization

   • OneTrust
   • Amazon Route 53
   • Apple Business
   • Canva
   • GlobalSign
   • Google Search Console

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

   Comment
   Close cos 0.886
5. 05
   ifconfig.me Top 10K English

   What Is My IP Address? - ifconfig.me

   Get my IP Address

   • Google Cloud
   • Google Cloud DNS
   • Google Fonts
   • Google Search Console

   0 say ifconfig.me is a good alternative to Sender Score 0 say ifconfig.me isn’t a real alternative to Sender Score

   Comment
   Close cos 0.884
6. 06
   Spamhaus spamhaus.org Top 1K English

   Strengthening trust and safety across the internet | Spamhaus

   Strengthening trust and safety online through IP and domain reputation intelligence, expertise, education, and community collaboration.

   • Cloudflare
   • Google Tag Manager
   • Algolia
   • Google Fonts
   • Google Search Console
   • Nuxt

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

   Comment
   Close cos 0.879
7. 07
   SurveyMonkey surveymonkey.com Top 1K English

   SurveyMonkey: The World’s Most Popular Survey Platform

   Easily create surveys and forms with AI and templates for employee and customer feedback, market research, event registrations and more. Get started free.

   • OneTrust
   • Amazon Route 53
   • Adobe
   • Apple Business
   • Atlassian
   • Bing Webmaster Tools

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

   Comment
   Close cos 0.882
8. 08
   W3Schools w3schools.com Top 10K English

   W3Schools Online Web Tutorials

   Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

   • Font Awesome
   • Google Tag Manager
   • Amazon Route 53
   • Amazon SES
   • AngularJS
   • Apple Business

   0 say W3Schools is a good alternative to Sender Score 0 say W3Schools isn’t a real alternative to Sender Score

   Comment
   Close cos 0.882
9. 09
   Quizlet quizlet.com Top 10K English

   Captcha Challenge…

   online studying platform

   • Cloudflare
   • OneTrust
   • Apple Business
   • Atlassian
   • Cloudflare DNS
   • DocuSign

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

   Comment
   Close cos 0.881
10. 10
    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 Sender Score 0 say Mailchimp isn’t a real alternative to Sender Score

    Comment
    Close cos 0.878
11. 11
    GeeksforGeeks geeksforgeeks.org Top 10K English

    GeeksforGeeks | Your All-in-One Learning Portal

    Your All-in-One Learning Portal. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.

    • Google Tag Manager
    • PHP
    • Amazon Route 53
    • WordPress
    • Amazon SES
    • Amazon CloudFront

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

    Comment
    Close cos 0.880
12. 12
    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 Sender Score 0 say Temp Mail isn’t a real alternative to Sender Score

    Comment
    Close cos 0.876
13. 13
    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 Sender Score 0 say Fastmail isn’t a real alternative to Sender Score

    Comment
    Close cos 0.877
14. 14
    web.dev Top 10K English

    web.dev

    Guidance to build modern web experiences that work on any browser.

    • Google Cloud
    • Google Fonts
    • Google Search Console

    0 say web.dev is a good alternative to Sender Score 0 say web.dev isn’t a real alternative to Sender Score

    Comment
    Close cos 0.875
15. 15
    Semrush semrush.com Top 10K English

    Semrush: Your Unfair Advantage for Growing Brand Visibility

    Semrush is the leading platform to grow and measure brand visibility across AI search, SEO, PPC, social, and more.

    • Marketo
    • PHP
    • Adobe
    • Amazon SES
    • Apple Business
    • Atlassian

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

    Comment
    Close cos 0.875
16. 16
    doxygen.org Top 10K English

    Doxygen homepage

    Source code documentation and analysis tool

    • Cloudflare
    • Bootstrap
    • Cloudflare DNS
    • Cloudflare Web Analytics
    • Google AdSense

    0 say doxygen.org is a good alternative to Sender Score 0 say doxygen.org isn’t a real alternative to Sender Score

    Comment
    Close cos 0.874
17. 17
    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.

    • OneTrust
    • Amazon Route 53
    • Adobe
    • Amazon Publisher Services
    • Apple Business
    • Atlassian

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

    Comment
    Close cos 0.874
18. 18
    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 Sender Score 0 say beehiiv isn’t a real alternative to Sender Score

    Comment
    Close cos 0.871
19. 19
    Bazaarvoice bazaarvoice.com Top 10K English

    Bazaarvoice | The UGC Platform for Authentic Shopper Experiences

    The leading UGC platform for authentic ratings, reviews, visual UGC, and review syndication that powers discovery, shopper trust, and higher ecommerce conversion.

    • Adobe Fonts
    • Google Tag Manager
    • OneTrust
    • PHP
    • WordPress
    • Adobe

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

    Comment
    Close cos 0.874
20. 20
    Whitepages whitepages.com Top 10K English

    Whitepages: People Search, Phone Numbers & Addresses

    Founded in 1997, Whitepages is the largest U.S. directory and trusted source for contact info and property data. Find people, phone numbers, addresses, and emails nationwide. Free and premium search across the Whitepages Identity Graph: 350M+ identity records, 4B+ data linkages, 112M+ property records.

    • Cloudflare
    • Google Tag Manager
    • Marketo
    • OneTrust
    • Amazon Route 53
    • Amazon SES

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

    Comment
    Close cos 0.871

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

04 · Fingerprints

Technology

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