# Page Not Found

The URL `marketing/sms-campaigns/why-include-your-sender-id` does not exist.

You might be looking for one of these pages:
- [Why include your Sender ID](https://docs.cymbal.co/help/sms/sms-best-practices/why-include-your-sender-id.md)
- [Why include "Reply STOP to opt-out"](https://docs.cymbal.co/help/sms/sms-best-practices/why-include-reply-stop-to-opt-out.md)
- [Carousel Ads](https://docs.cymbal.co/help/ads/creating-meta-ads-campaign/carousel-ads.md)
- [How to run Dark Ads](https://docs.cymbal.co/help/ads/creating-meta-ads-campaign/how-to-run-dark-ads.md)
- [SMS pricing](https://docs.cymbal.co/help/pricing/sms-pricing.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.cymbal.co/help/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.cymbal.co/help/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/help/sms/sms-best-practices/why-include-your-sender-id.md`)
- Use `Accept: text/markdown` header for content negotiation