Hi,
I’m experiencing an issue where the double opt-in confirmation email is not being sent, even though everything appears to be correctly configured.
Here’s what I’ve already verified:
Form Setup
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Using a Klaviyo-hosted flyout form (not custom coded).
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Form is correctly connected to the intended list.
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After submission, the form proceeds to the next step as designed.
List Configuration
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Double opt-in is enabled on the list.
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A confirmation email template is live.
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The list is actively used, and members are being added (but remain in "Never Subscribed" status).
Domain & Email Settings
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Branded sending domain is verified (DNS settings for SPF, DKIM, DMARC, and Klaviyo verification are all passing).
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Emails are sent from the verified subdomain.
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No conflicting sender address is in use.
Testing & Issue
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Tested with multiple new email addresses.
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None receive the confirmation email.
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As a result, welcome flow does not trigger due to “Never Subscribed” status.
I've followed all available documentation and forum suggestions. Still, the confirmation email is never delivered.
Would really appreciate support or insights — is there a setting that could be causing this?
Thanks in advance!