---
title: Why aren’t SMS or WhatsApp alerts being sent after form submission?
description: "Possible reasons include: - Incorrect credentials or webhook UID. - Unregistered DLT Template ID (for SMS) or WhatsApp Template Name. - Missing user opt-in for notifications. - Rate-limiting (one submission per IP per hour by default). - Invalid mobile number…"
url: "https://www.smsgatewaycenter.com/blog/kb/why-arent-sms-or-whatsapp-alerts-being-sent-after-form-submission/"
updated: "2025-05-11"
category: Integrations / Contact Form Integration
---

# Why aren’t SMS or WhatsApp alerts being sent after form submission?

Possible reasons include:

- Incorrect credentials or webhook UID.
- Unregistered DLT Template ID (for SMS) or WhatsApp Template Name.
- Missing user opt-in for notifications.
- Rate-limiting (one submission per IP per hour by default).
- Invalid mobile number format (must include country code, e.g., +919876543210).
  Check **Delivery Logs** in your panel for error details and verify settings. Contact support for assistance.

### More Related Articles

- [Where can I get help if I encounter issues?](https://www.smsgatewaycenter.com/blog/kb/where-can-i-get-help-if-i-encounter-issues/)
- [Can I use Contact Form Integration with multiple websites?](https://www.smsgatewaycenter.com/blog/kb/can-i-use-contact-form-integration-with-multiple-websites/)
- [What happens if I exceed the rate limit for submissions?](https://www.smsgatewaycenter.com/blog/kb/what-happens-if-i-exceed-the-rate-limit-for-submissions/)

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