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Find step-by-step instructions and troubleshooting solutions in our knowledge base.
POPULAR TOPICS
Integrations
Flows
Audience
Campaigns
Sign-up forms
Deliverability & compliance
HELP BY PRODUCT
SMS
Reviews
Marketing Analytics
Customer Hub
BETA
Academy
Klaviyo Academy
Expert training and education to help you succeed with Klaviyo, and beyond.
ON-DEMAND LEARNING
Quick guides
Learn key strategies and concepts in 15 minutes or less.
Courses
Learn new marketing strategies and apply them to your business with practical examples.
Best practices
Discover top marketing strategies based on your core business goals.
LIVE LEARNING
Live trainings
Build confidence through hands-on interactive workshops and thought-provoking strategy sessions.
Live office hours
Join a strategic discussion where you can ask questions and get answers in real-time.
CREDENTIALS
Klaviyo credentials
Dig deeper into select topics and showcase your expertise with a final exam to earn a certificate and digital badge.
Klaviyo product certificate
Deliverability certificate
Klaviyo developer certificate
See all certificates
Community
Klaviyo Community
Join our thriving community network to connect with brands like yours—online and in person.
JOIN THE CONVERSATION
Ask a question
Post a question and get thoughtful answers from Klaviyo powerusers.
Strategic advice
Recent threads
Meet the Champions
JOIN A USER GROUP
Browse all groups
Your people are waiting. New ideas and connections are a click away.
Developer group
Entrepreneur group
WooCommerce group
JOIN A MEETUP CHAPTER
New York City
Los Angeles
Austin
San Diego
Amsterdam
Developers
Klaviyo Developers
Access API documentation and developer guides to help you build with Klaviyo.
TOP RESOURCES
Get started
Access key resources and a step-by-step checklist for how to start developing with Klaviyo.
List your integration
Learn how to join our ecosystem and get your app listed in our Integrations Directory.
Developer tools
Generate sample data, monitor your API usage, and access our Postman collections.
KLAVIYO APIS
API reference
Browse our full catalog of API docs.
Changelog
Versioning & deprecation policy
Rate limits & error handling
VIDEO TUTORIALS
API tutorials on YouTube
Subscribe to our Klaviyo API Tutorials playlist for easy access to step-by-step developer walkthroughs.
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Deliverability certificate
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Build and maintain your sender reputation
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Use a main list to manage subscribers
Lessons
Build and maintain your sender reputation
Course overview
Lessons
Why sender reputation matters
Migrate engagement data to Klaviyo
Assess when to warm your infrastructure
Build your engaged segments
Build a strong list with double opt-in
Use a main list to manage subscribers
Let engagement drive your sending strategy
Keep your list clean
Sunset unengaged subscribers
Final quiz: Build and maintain your sender reputation
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