Connect SMS (through Close) to ChatGPT

What you need:

• A Close account
• A +1 number in Close (Settings, Phone & Voicemail)
• US texts: A2P 10DLC approved in Close (one time fees from $4.50 plus $15)
• Consent from each person

Built from each app's own docs.

Plan: Any ChatGPT plan has the plugin list. Work accounts may need an admin to turn the app on.

1. In Close, get a +1 phone number under Settings, then Phone & Voicemail. Close can't text from outside numbers.
2. Texting US numbers? Register for A2P 10DLC first: Settings, then Phone & Voicemail, then the US Compliance tab. Fees start at $4.50 for the brand and $15 for the campaign check. Texts to US numbers don't deliver until it's approved.
3. Get a yes from each person before you text them.
4. Connect Close to ChatGPT: Plugins, search Close CRM for ChatGPT, Connect. Pick safe writes.
5. Ask your AI to write the text and save it as a Close SMS template. This needs safe writes when you connect Close.
6. Send it from Close: click SMS on the lead and pick the template. Or use the template in a Close Workflow SMS step, so every new lead gets it.

Test it: Ask: show the last 3 texts in Close. Don't send anything.

What it can do: Read texts in Close and write SMS templates. Close sends the text from your Close number, by hand or in a Workflow.

What it can't do: Close's MCP has no send text tool. To send from the AI itself, it needs Close's API and a key. US texts need A2P approval first.

Close texts US, Canada and the other countries on its list, from a Close number only. Close's A2P page covers US numbers and says nothing about Canada. In Canada, CASL still needs consent. Close throttles Workflow texts to 1 every 3 seconds, and a Workflow text needs a shared SMS template.

From help.close.com and help.close.com and developer.close.com and help.close.com. Last checked Oct 28, 2026.

Never paste an API key into a chat. Use the app's connector screen.

SMS (through Close) with another AI: Claude · Claude Code · Grok Bot · Gemini · Copilot

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