Delivery & failures - Heyy Help Center

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On the campaign execution page, each recipient (contact) has a delivery outcome—sent, delivered, failed, or other states your channel reports.

Why failures happen

Common causes:

Contact subscription or opt-out
Invalid or missing phone or channel identity
WhatsApp template or policy issues—see Message errors
Channel disconnected or misconfigured—see Common issues

Fix the underlying issue (template, channel, contact data) before retrying.

Follow-up sends

After a run, you can target contacts who failed with a new campaign from the execution screen—without rebuilding the full audience from scratch. That workflow pairs with Export & bulk actions when you need to update contact data first.

Inbox and webhooks

Replies to campaign messages appear in Inbox like other conversations. Outbound campaign messages may include campaign / campaignExecutionId in message webhooks—useful for integrations.