WhatsApp Message Not Delivered? Causes and Fixes
One grey tick means the message was sent but not delivered. Two grey ticks mean delivered. Two blue ticks mean read (if read receipts are on). Messages stay undelivered when the recipient is offline, has blocked you, or, for businesses, when WhatsApp limits or rejects the message.
Common reasons for personal messages
- The recipient’s phone is off, offline or has no data.
- They haven’t opened WhatsApp in a while.
- They blocked your number.
- They changed or deleted their WhatsApp account.
- Your own connection dropped while sending.
Extra reasons for WhatsApp Business API messages
- Outside the 24-hour window: free-form messages can’t be sent after the customer service window closes. Use an approved template.
- Template issues: a paused, disabled or rejected template can’t be sent.
- Messaging limit reached: your number hit its daily tier limit.
- Low quality rating: many blocks or reports can restrict sending.
- Marketing message limits per user: WhatsApp may cap how many marketing messages one person receives from businesses, to protect user experience.
- Invalid numbers: wrong country code, or the number isn’t on WhatsApp.
How to fix undelivered WhatsApp business messages
- Check the error code and status in your dashboard. Monarkz shows per-message delivery status.
- Validate numbers in international format, for example +14155550123.
- Use approved templates for messages outside the 24-hour window.
- Improve relevance: segment audiences and reduce frequency to protect quality.
- Retry marketing messages later rather than resending immediately.
Learn more about broadcast limits and the WhatsApp Business API.
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Frequently asked questions
Why does my WhatsApp message only show one tick?
It was sent from your phone but not yet delivered to the recipient’s device, usually because they are offline.
Does one tick mean I’m blocked?
Not necessarily. It can also mean they are offline. A lasting single tick plus no profile updates can suggest a block.
Why are my WhatsApp Business API messages failing?
Common causes are an expired 24-hour window, template problems, messaging limits, quality rating or per-user marketing message limits.