> For the complete documentation index, see [llms.txt](https://docs.reach-book.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.reach-book.com/mailboxes/connect-a-mailbox.md).

# Connect a mailbox

Reach-book.com sends from your own email account, so replies land in your normal inbox too. Open **Workspace settings → Mailboxes & connections**.

![Mailboxes & connections with three Microsoft 365 mailboxes](https://965745608-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fdg7LyestsaNAIIzzILlv%2Fuploads%2Fgit-blob-623342f0bab8dc1b526c9595f6038e37f1c7c73c%2Fconnections.webp?alt=media)

## Options

| Mailbox                                             | Send | Mailbox drafts | Read replies | Follow-up campaigns |
| --------------------------------------------------- | ---- | -------------- | ------------ | ------------------- |
| **Sign in with Google** (Gmail, Google Workspace)   | Yes  | Yes            | Yes          | Yes                 |
| **Sign in with Microsoft** (Microsoft 365, Outlook) | Yes  | Yes            | Yes          | Yes                 |
| **SMTP** (any mail server, or a Gmail app password) | Yes  | No             | No           | No                  |

The SMTP dialog has presets for Gmail, Microsoft 365, Zoho, Yahoo, iCloud, Fastmail, GMX and Yandex, or choose **Other or custom server**.

Use Google or Microsoft whenever you can. SMTP can only send: it can't read replies or confirm delivery, so it can't run follow-up campaigns.

## Default sender and sharing

* Set one mailbox as your **Default sender**.
* Under **Who can use it**, share a mailbox with teammates for sending, reading conversations, or both. See [Share a mailbox](/team/share-a-mailbox.md).

## What Reach-book.com reads

Only replies to threads Reach-book.com started. Nothing else in your mailbox is read.