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# Sending rules and mailbox health

1. [Mailboxes](/reach-book.com-docs/mailboxes)

# Sending rules and mailbox health

## Workspace sending rules

Administrators set these in **Workspace settings → Sending rules**:

Rule

Default

What it does

Daily limit per member

50

The most emails each member sends per day

Pause between sends

45 seconds

Spaces emails out like a person sending them

Verify addresses before sending

On

Skips undeliverable addresses and holds risky ones for review

Check for replies

Every 10 minutes

How often replies are fetched

## Per-mailbox delivery controls

On each mailbox you can set:

* A **daily limit** for that mailbox
* **Auto-pause**: the mailbox pauses after repeated failures, with a failure threshold you choose
* A **DKIM selector**, then **Check records** to check your domain's email records

## Mailbox status

The **Health** tab shows each mailbox's state:

* **Sending paused**: sending stopped, usually after failures or an uncertain delivery. Review the cause, then click **Resume sending**.
* **Disconnected**: sign in with Google or Microsoft again to reconnect.

If a delivery can't be confirmed, the mailbox always pauses so the same email is never sent twice.