Once the connector is added, just ask Claude in plain English. A few things to try:
Claude submits the emails, waits for verification to finish, and reports the result back to you — no dashboard visit required.
The ReachStream EmailVerifier connector lets you verify email addresses directly from a Claude conversation — no need to open the ReachStream dashboard. Ask Claude to verify one address, a handful, or a whole list, and it submits the request, waits for the result, and reports back which addresses are safe to send to.
Developers and technical users can also run this connector locally or point Claude Desktop / Claude Code at it directly. See the connector’s setup documentation for the exact configuration steps.
Verification runs in the background: Claude submits the address, then checks back until a final result is ready.
| Result | What it means |
|---|---|
| Valid | The mailbox exists and can safely receive mail. |
| Catch-All | The domain accepts mail for any address, so this specific mailbox can’t be individually confirmed. |
| Risky-Valid | The mailbox appears to exist but carries traits that raise deliverability risk (for example, a role-based address). |
| Risky | Elevated chance of a bounce or blocklist hit — for example disposable or temporarily rejecting addresses. |
| Invalid | The mailbox doesn’t exist, or the address is malformed or undeliverable. Don’t send to it. |
| Do Not Mail | The address is a spam trap or otherwise flagged as unsafe to contact. Never send to it — doing so can damage your sender reputation. |
| Pending / Processing | Verification is still running. Claude checks again automatically and reports the final result once it’s ready. |
| If you see… | It means… | Do this |
|---|---|---|
| “No approval received” on a verify request (browser) | Verifying emails uses credits, so Claude asks you to approve the action first. In-browser, that approval prompt can be missed because of an ad blocker/privacy extension, a background tab, or a dropped connection. | Send the request again and click Approve promptly. If it keeps happening, try an incognito window with extensions off, or reconnect under Settings → Connectors. |
| Stuck on the sign-in screen | You’re authenticating with your normal ReachStream login — a stuck session can loop the browser back to sign-in. | Close and restart the connector flow from Settings → Connectors, and sign in with the same email your ReachStream account uses. |
| “Request limit reached” or “Plan expired” | Your account is out of credits, or your plan’s validity date has passed. | Check your credit balance in your ReachStream account, or contact support to top up or renew. |
| “Rate limit exceeded” | Verification requests are capped per account to keep the service fast and fair for everyone. | Wait under a minute and try again. For large lists, send fewer, larger batches instead of many small ones. |
| Result stays “pending” | Verification runs in the background, so it’s not instant — larger lists take longer. | Ask Claude to check again in a moment; it will keep polling and report back once it’s done. |
| “Request not found” | The request id doesn’t exist, or belongs to a different ReachStream account than the one you’re connected with. | Confirm you’re signed in with the right ReachStream account and try again. |
You: Verify jane@acme.com using ReachStream EmailVerifier
Claude: I’ve submitted jane@acme.com for verification (request #310878, status: pending). I’ll check back for the result.
Claude: jane@acme.com is Valid — the mailbox exists and is safe to send to.
Reach the ReachStream support team at support@reachstream.com or visit help.reachstream.com/portal/en/home.