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Inkbox

Identity and communication layer for AI agents: email, phone, iMessage and Agent2Agent under one identity (YC S26).

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What Inkbox does

Identity and communication layer for AI agents: email, phone, iMessage and Agent2Agent under one identity (YC S26). Gives an agent its own email, phone number, iMessage and internet address. Has connectors for Grok Bot, Claude, ChatGPT, Hermes, Claude Code, Codex and OpenCode.

Good for

  • Agents that call/text/email customers
  • Give an assistant a real phone number

Try this in 10 minutes

  1. Agents that call/text/email customers. Use the free plan: pick one real example from your own business and try just that.
  2. Give an assistant a real phone number. Put the result next to how you do it today. Is it faster, cheaper or better?
  3. Read the quick-start and note which no-code tools (n8n, Make, Zapier, Claude) it connects to.

Mini-tasks based on common small-business uses for this tool.

Honest take

No red flags in our notes so far

  • Compare with AgentMail and Photon.

Pricing

Free $0 (3 agent identities); Developer $30/mo (10 identities); Startup $200/mo (100 identities); Enterprise custom. Overage SMS/call minutes $0.03 each (US/Canada).

Prices as listed by the maker when we last checked (2026-10-20); usually in US dollars. Check the website for current prices.

Latest update

No major updates recorded since we added it.

Is Inkbox worth it? Quick answers

Is Inkbox worth it?

Inkbox is worth a look if it matches a job you already do (Agent infrastructure). Compare with AgentMail and Photon. There is a free tier, so you can test it before paying.

How much does Inkbox cost?

Free $0 (3 agent identities); Developer $30/mo (10 identities); Startup $200/mo (100 identities); Enterprise custom. Overage SMS/call minutes $0.03 each (US/Canada).

What is Inkbox used for?

Identity and communication layer for AI agents: email, phone, iMessage and Agent2Agent under one identity (YC S26). Typical uses: agents that call/text/email customers; give an assistant a real phone number.