> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.reach-book.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Email verification statuses

1. [Prospects](/reach-book.com-docs/prospects)

# Email verification statuses

Every email address can be checked before you send to it. The status shows as a badge next to the address.

Status

What it means

Should I send?

Valid / Verified deliverable

The mailbox exists and accepts mail

Yes

Accept all

The mail server accepts every address, so this one can't be confirmed

With care

Risky / Verified risky

It may bounce

Review first

Webmail

A personal address (for example Gmail)

Usually not for B2B

Disposable

A temporary address

No

Invalid / Verified undeliverable

The mailbox doesn't exist

No

Unknown / Not verified yet

Not checked, or the server didn't answer

Verify first

By default, **Verify addresses before sending** is on in **Sending rules**. Undeliverable addresses are skipped, and risky ones are held for your review.

> **Important:** A verified address means the mailbox exists. It doesn't guarantee your email reaches the inbox or gets a reply.