# What is the Contact queue and how does it work?

**What is the Contact queue?**
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The **contact queue** is a place where we’ll store the contacts that couldn’t be added to your list.

**How does the Contact queue work?**
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If your account reaches your available list size limit, new contacts are added to the **Contact queue** and will be added to your lists after upgrading the account to a higher limit.

![contacts in overquote](https://us-wd.gr-cdn.com/help/sites/9/2021/09/1101/Screen-Shot-2021-09-03-at-13.01.11.png)

**Free:** Contacts will be added to the **Contact queue** if you go over the list size limit.

**Paid accounts**: Contacts will be added to the **Contact queue** in case you go over the limit by **importing** or **adding them manually**.  
  
Please note that if contacts join your list through any other method besides **importing** or **adding manually**, then a [list extension fee will apply](https://www.getresponse.com/help/what-happens-when-i-go-over-my-list-size-limit.html) instead.

In case you go over 500 contacts limit, all contacts added via any method will go straight to the Contact queue.

![](https://us-wd.gr-cdn.com/help/sites/9/2022/04/1009/Screen-Shot-2021-09-07-at-09.41.03-e1649153363234-1024x143.png)

If you want to **unlock** the **paid features**, you can upgrade the account to any paid plan. The queued contacts will then be added to your list. In case you don’t want to upgrade, contacts are removed from the **Contact queue** upon reaching 32 days on for security and list hygiene reasons. We will notify you if there are any contacts on your **queue** that are about to be removed.

What happens when I upgrade my account?
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After the account is upgraded, you will be able to add contacts from the **queue** to your contact’s list or remove them from the **queue** (you will see a notification within your dashboard regarding it).

![](https://us-wd.gr-cdn.com/help/sites/9/2022/04/1013/Screen-Shot-2021-09-07-at-09.42.03-e1649153622308-1024x189.png)