How to test AI SMS auto-reply flow in n8n without Twilio toll-free or 10DLC verification?

Hi everyone,

I’m experimenting with an AI-powered SMS auto-responder workflow using n8n, OpenAI, and Google Sheets.

The idea is working well in theory — the workflow receives messages and generates a smart reply using GPT — but I’m running into issues with testing:

My Twilio toll-free number was rejected during verification.

Local numbers now require A2P 10DLC registration, which also blocks replies.

I don’t have a registered business or website yet, so I can’t complete the verification process.

I’m just trying to test and iterate on the concept before going any further.

❓ My Questions:

Has anyone else run into this issue when testing SMS workflows without verification?

Are there SMS providers or alternative channels that allow 2-way SMS testing more easily?

How have others solved this while still in the prototyping or solo dev stage?

Any advice or suggestions would be appreciated!

Thanks 🙏

PawOne

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