Sites like Twilio

01 · Entity

About Twilio

Twilio sendgrid.com

SendGrid Email API and Email Marketing Campaigns | Twilio

SendGrid's trusted email API and marketing campaigns platform is now available through Twilio.com.

Wikidata: email delivery service

Top 10K · #5,949 English 13 technologies Crawled Nov 6, 2026

Visit Twilio

Summary by Claude

SendGrid, owned by Twilio, provides an email API and SMTP relay for sending transactional email at scale, plus tools for creating and sending email marketing campaigns.

Who it’s for

Developers and marketers at businesses

Business model

Usage-based subscriptions

• email delivery service
• transactional email API
• SMTP relay
• email marketing campaigns
• email deliverability
• bulk email sending
• email templates
• email analytics

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Twilio’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
   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 Search Console
   • Google Tag Manager
   • Google Workspace
   • Microsoft 365
   • Amazon Route 53
   • Adobe

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

   Comment
   Very close cos 0.899
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!

   • Google Tag Manager
   • Amazon Route 53
   • Cloudflare
   • Google Ads conversion tracking
   • Google Analytics
   • LinkedIn Insight Tag

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

   Comment
   Very close cos 0.894
3. 03
   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.

   • Google Search Console
   • Google Workspace
   • Microsoft 365
   • Atlassian
   • Brevo
   • Cloudflare

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

   Comment
   Close cos 0.883
4. 04
   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!

   • Google Search Console
   • Google Workspace
   • Meta Business Suite
   • Microsoft 365
   • Algolia
   • Cloudflare

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

   Comment
   Close cos 0.883
5. 05
   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.

   • Google Tag Manager
   • Amazon Route 53
   • Adobe Fonts
   • cdnjs
   • Cloudflare
   • Font Awesome

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

   Comment
   Close cos 0.880
6. 06
   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 Search Console
   • Google Tag Manager
   • Google Workspace
   • Meta Business Suite
   • Microsoft 365
   • Amazon Route 53

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

   Comment
   Close cos 0.881
7. 07
   OneSignal onesignal.com Top 10K English

   Customer Engagement Platform for Email, Push… - OneSignal

   The world's leader for mobile push notifications, web push, SMS, email and in-app messaging. Trusted by 2 million+ businesses to send 12 billion+ messages per…

   • Google Search Console
   • Google Tag Manager
   • Google Workspace
   • Bootstrap
   • cdnjs
   • Cloudflare

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

   Comment
   Close cos 0.869
8. 08
   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!

   • Adobe Experience Manager
   • Google Search Console
   • Google Workspace
   • Meta Business Suite
   • Microsoft 365
   • Adobe

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

   Comment
   Close cos 0.869
9. 09
   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 Twilio 0 say Fastmail isn’t a real alternative to Twilio

   Comment
   Close cos 0.871
10. 10
    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 Search Console
    • Google Tag Manager
    • Meta Business Suite
    • nginx

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

    Comment
    Close cos 0.870
11. 11
    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.

    • Amazon CloudFront
    • Google Search Console
    • Google Workspace
    • Meta Business Suite
    • Microsoft 365
    • Amazon Route 53

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

    Comment
    Close cos 0.869
12. 12
    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.

    • Google Search Console
    • Google Workspace
    • Meta Business Suite
    • Microsoft 365
    • Apple Business
    • Atlassian

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

    Comment
    Close cos 0.866
13. 13
    Braze braze.com Top 1K English

    Braze Customer Engagement Platform

    Power customer-centric interactions between consumers and brands in real-time.

    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Microsoft 365
    • Amazon Route 53
    • VWO

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

    Comment
    Close cos 0.866
14. 14
    Temp Mail temp-mail.org Top 10K English

    Website

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

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

    Comment
    Close cos 0.864
15. 15
    Airbridge airbridge.io Top 10K English

    Attribution for Subscription Apps | Airbridge

    See which ads and content drive installs, trials, subscriptions, and revenue. Compare results with ad spend. Try Airbridge free for 30 days.

    • Google Search Console
    • Google Workspace
    • Amazon Route 53
    • jsDelivr
    • Next.js
    • React

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

    Comment
    Close cos 0.862
16. 16
    Constant Contact constantcontact.com Top 10K English

    digital marketing platform

    • Google Search Console
    • Google Workspace
    • Meta Business Suite
    • Microsoft 365
    • Atlassian
    • Canva

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

    Comment
    Close cos 0.860
17. 17
    Yotpo yotpo.com Top 10K English

    Yotpo: loyalty, reviews & AI visibility for ecommerce

    Drive ecommerce growth with Yotpo. Build loyalty programs, collect reviews, and boost AI visibility to get found, earn trust, and turn shoppers into advocates.

    • Amazon CloudFront
    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Amazon Route 53
    • Segment

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

    Comment
    Close cos 0.861
18. 18
    Sectigo sectigo.com Top 10K English

    Certificate Management Solutions & SSL Certificates | Sectigo® Official

    Sectigo is a leading provider of SSL certificates & automated certificate management solutions. A Certificate Authority trusted by global brands for 20+ years.

    • Google Search Console
    • Microsoft 365
    • Adobe
    • Adobe Fonts
    • Apple Business
    • Atlassian

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

    Comment
    Close cos 0.860
19. 19
    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.

    • Google Search Console
    • Google Workspace
    • Meta Business Suite
    • Microsoft 365
    • Adobe
    • Amazon SES

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

    Comment
    Close cos 0.861
20. 20
    Demandbase demandbase.com Top 10K English

    ABM Platform for B2B Sales & Marketing Success | Demandbase

    Elevate your B2B go-to-market strategy with Demandbase's ABM platform, delivering smarter insights, agent-led automation, and AI-powered pipeline.

    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Amazon Route 53
    • VWO
    • Adobe

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

    Comment
    Close cos 0.858

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

04 · Fingerprints

Technology

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