Klaviyo welcome flow is live but nobody is receiving it

5. Check the flow filters. Something like "has not placed order" or "is in list X" can quietly exclude everyone you test with. 6. Smart Sending. If your test profile got another email recently, Klaviyo can skip the welcome email for it. Turn it off on the first message, or test with a brand new address.

Check these in order: 1. The flow's trigger list is the same list your signup form adds people to. Mismatched lists is the most common one. 2. Double opt-in. If it's on, people aren't added to the list until they click the confirmation email, so the flow never triggers for anyone who didn't confirm. 3. The emails inside the flow are set to Live too, not just the flow. Each message has its own status and can still be on Manual or Draft. 4. Anyone who joined before you switched the flow on won't get it. Flows only catch people who enter after they go live. Open one test profile and look at its activity, it'll show whether they joined the list and whether they entered the flow.