> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dmarceye.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What is a domain slot?

*Domain slots are the core billing unit in DMARCeye — each monitored domain takes up one slot, and you can swap domains freely within your paid limit.*

In DMARCeye, the domain slot is the primary billing unit. It determines how many domains you can monitor and how your plan is calculated—whether you’re on a monthly or annual subscription.

## **What is a domain slot?**

A domain slot indicates the ability to monitor a single domain within your account.

* Each domain added to DMARCeye occupies one slot.
* The total number of slots determines your billing — not the number of reports or emails.
* If you remove a domain, the slot becomes available again — and you can assign it to a new domain.

A domain slot is similar to a reserved seat: it’s yours for the billing period, regardless of who sits in it.

## **Can I change the domain inside a slot?**

Yes. You can remove one domain and add another within the same billing period — at no extra cost — as long as you stay within your **paid quota**.

Example:

* You have a Scale plan with 3 domain slots.
* In week 1, you’re monitoring:
  * [domain-a.com](http://domain-a.com)
  * [domain-b.com](http://domain-b.com)
  * [domain-c.com](http://domain-c.com)
* Later, you remove [domain-b.com](http://domain-b.com) and replace it with [domain-d.net](http://domain-d.net).
* This is fine — you’re still using only 3 slots.

## **Subdomains count as separate slots**

Adding a subdomain (such as [mail.example.com](http://mail.example.com) or [newsletter.example.com](http://newsletter.example.com)) to DMARCeye creates a separate monitored entity and occupies its own domain slot, just like a root domain would.

If you manage several subdomains alongside your root domain, plan your slot count accordingly — each one will count toward your limit independently.

For a full explanation of how subdomains interact with domain slots, including examples and common setups, see [Subdomains and domain slots](/subdomains).

## **Domain Statuses**

In addition to domain slots, each domain in DMARCeye can have a specific **status**. Understanding these statuses helps you manage your domains effectively and optimize your slot usage.

### **Active**

An **active domain** is fully set up and being monitored.

* DMARC reports are being received and processed
* The domain is counted toward your **domain slot limit**
* All monitoring and features are applied

### **Pending (formerly “Inactive”)**

A **pending domain** is added to your account but not yet fully configured.

* DMARC records may be missing or not correctly set
* No reports are being received yet
* The domain **still occupies a domain slot**

This status typically means setup is incomplete and requires action (e.g., DNS configuration).

### **Parked**

A **parked domain** is temporarily disabled.

* Monitoring is paused
* No reports are processed
* The domain **does NOT count toward your domain slot limit**

Parking is useful if you want to keep a domain in your account without using up a slot. You can reactivate it anytime by un-parking it (as long as you have a free slot available).

## **Why do we charge for slots, not “active” domains?**

DMARCeye can’t reliably and automatically determine whether a domain is active or inactive in real time. The activity depends on external DNS configuration, which can change at any time — often beyond our control or visibility.

That’s why we charge based on the slots you’ve claimed, not whether those domains are properly configured or receiving reports.

### **Practical tips**

* If you’re planning to rotate domains regularly (e.g., for testing), choose a plan with enough slots to cover your needs.
* Removing a domain from your dashboard frees up a slot immediately.
* On **monthly** billing, the number of slots used at the end of the billing cycle determines your next invoice.
* On **annual** billing, new slots added mid-cycle are charged pro rata.