Vouch - Email verification

Vouch tells Claude whether an email address can actually receive mail. Ask "is jane@example.com a real address?" and Claude checks it live and reports back.

Each check runs four steps: syntax validation, a DNS lookup for the domain's mail servers, a live SMTP probe of the mailbox, and catch-all detection. Vouch never sends an email to the address.

What you get back:

• A verdict: deliverable, undeliverable, risky or unknown, with the reason
• A confidence score from 0 to 100
• Quality flags for disposable addresses, role accounts (info@, sales@) and free providers
• A suggested correction when the address looks like a typo (gmial.com → gmail.com)

Useful for:

• Checking a lead or contact before you email them
• Vetting signups and catching mistyped addresses
• Cleaning up a short list of addresses in a conversation

The connector is read-only: it looks addresses up and changes nothing in your account.

Sign in with your Vouch account to connect. New accounts start with 250 free verifications, no card required. After that, each verification uses 1 pre-paid credit, and credits never expire.