> For the complete documentation index, see [llms.txt](https://docs.mercuri.cx/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mercuri.cx/communication-channels/sms-integration/tfn-verification-process.md).
# TFN verification process
Toll-Free Number (TFN) verification is essential for compliance with carrier regulations, reducing message filtering, and improving delivery rates.
### Documents for TFN verification:
***
**Business Information:**
* Legal Business Name (matching official records)
* Business Address (official registered location)
* Business Website URL
* Industry Category (e.g., Retail, Healthcare, Finance)
**Authorized Contact Information:**
* Contact Name (person authorized to submit the request)
* Contact Email and Phone Number
**Messaging Use Case:**
***
* A detailed description of the messaging purpose (e.g., customer support, appointment reminders, promotional campaigns)
* Estimated Monthly Message Volume
**Opt-In Process Details:**
* Description of how users consent to receive SMS (e.g., web forms, in-store sign-ups, or SMS keywords)
* Screenshots of the opt-in page or sample opt-in keywords
**Messaging Content Samples:**
* At least two sample messages representing typical use cases (e.g., order confirmation, promotional offers)
***
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