Verifi.Email for AI agents
Verifi.Email validates email addresses and checks a domain's email security setup, used by teams cleaning a list before a send. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.
What agents do in Verifi.Email.
Validate an email address
Check whether a single email address is valid and deliverable.
Validate a batch of emails
Check a list of email addresses in one pass, a read-only validation.
Check a domain's health
Look up a domain's email security configuration before trusting mail from it.
3 Verifi.Email actions, graded by risk.
Every Verifi.Email action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.
read
3Look things up. Allowed by default.
- verifi_email.validate_emailValidate Email
- verifi_email.validate_emailsValidate Emails
- verifi_email.check_domain_healthCheck Domain Health
write
0Create and change things. Allow, or ask the user first.
- No write actions.
destructive
0Delete, cancel or archive. Ask first, or deny outright.
- No destructive actions.
Verifi.Email in three steps.
- 01Your users connect Verifi.EmailThey add their Verifi.Email api key on Arc0 Connect, under your brand. It goes straight into the vault.
- 02You set the rulesReads run, and writes like “updates” can wait for the user to approve.
- 03Any agent can actYour agent calls Verifi.Email through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
await arc0.policies.set('verifi_email', { read: 'allow', write: 'ask', destructive: 'deny', }) # Claude Code: the same connection, one URL $ claude mcp add --transport http arc0 \ https://mcp.arc0.ai/u/u_8f2
How Verifi.Email connects.
Users add their Verifi.Email api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
The same Verifi.Email connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →
- AUTH
- API key
- CREDENTIALS
- Per-tenant encrypted vault
- MODEL SEES
- Results only, never credentials
- AUDIT LOG
- Every call, on every plan
Use Verifi.Email from any agent.
ClaudeChatGPTCursor
Codex
VS CodeOpenAI Agents SDKClaude Agent SDK
Vercel AI SDK
Mastra
LangGraph
Verifi.Email and Arc0, answered.
Can I use Verifi.Email with Claude, ChatGPT or Cursor?
Yes. Connect Verifi.Email to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Verifi.Email actions you allow.
How do users connect Verifi.Email?
Users add their Verifi.Email api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
Which Verifi.Email actions can my agent take?
3 in total: 3 read, 0 write and 0 destructive. Your policies decide which of them each agent may call.
Can I make my agent read-only in Verifi.Email?
Yes. Allow read actions and deny writes in the Verifi.Email policy. Your agent can still look things up, and any write it attempts is blocked and logged.
Can my own backend call Verifi.Email too?
Yes. The same Verifi.Email connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.
Plug Verifi.Email into your agent.
Your users connect Verifi.Email once, under your brand. Your agent gets 3 actions behind your policies, with every call on the record.
Free to build · MCP + REST · Audit log on every plan