---
title: Invite candidates to an Assessment
description: How to invite candidates using a public and private link
---

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# Invite candidates to an Assessment

## How to invite candidates using a public and private link

There are two ways to invite a candidate to a screening assessment: **send private invite links** or **copy public invite link.**

**Note:** There is a [very high daily limit](https://help.coderbyte.com/knowledge/limit-on-candidates-invited-per-assessment?hsLang=en) of how many candidates you can invite per assessment and per day to ensure server performance.

![](https://help.coderbyte.com/hs-fs/hubfs/CleanShot%202025-02-18%20at%2012-01-30-png.png?width=1917&height=658&name=CleanShot%202025-02-18%20at%2012-01-30-png.png)

1. **Public link**: This is a URL that can be shared with anyone via any communication method. You can pre-fill candidate information into public links by adding the following to the end of the URL:
   
   ```
   &name=Name&email=email
   ```
2. **Private link**: This sends a unique, single-use invite link to each candidate. You can enter and send up to 50 email invitations at once. Learn more about customizing [welcome emails](https://help.coderbyte.com/knowledge/custom-email-templates?hsLang=en) and [welcome screens](https://help.coderbyte.com/knowledge/custom-welcome-screen-templates?hsLang=en).

You can see which User invited a candidate by clicking the three dots at the end of a candidate row:

![](https://help.coderbyte.com/hs-fs/hubfs/CleanShot%202025-02-18%20at%2012-03-13-png.png?width=1440&height=221&name=CleanShot%202025-02-18%20at%2012-03-13-png.png)

### Candidate metadata

You can configure private invite links to map to custom IDs and [prevent Coderbyte from collecting any personally identifiable information](https://help.coderbyte.com/knowledge/personally-identifiable-information-pii-for-candidates?hsLang=en).

You can also configure private invite links to include additional metadata about candidates which is [available via API](https://docs.coderbyte.com/reference/get-report-data) when candidates complete the assessment. To do so, add an internal ID for each candidate in this format: \<email\> (\<ID\>). For example:

- **test@gmail.com (id\_567\_linkedin)** will set id\_567\_linkedin as the internal ID for the candidate test@gmail.com. 

### Red warning icon

If you see a red warning sign near a candidates email address, it's because they joined the same assessment multiple times with the public invite link. While this doesn't *necessarily* mean the candidate cheated, it is something you should be aware of when assessing the candidates results.

![Screen Shot 2020-03-28 at 7.16.35 PM](https://help.coderbyte.com/hs-fs/hubfs/Screen%20Shot%202020-03-28%20at%207.16.35%20PM.png?width=688&name=Screen%20Shot%202020-03-28%20at%207.16.35%20PM.png)

**Note: **To prevent candidates from signing up under a fake email address to preview the assessment before actually taking it, use private links.

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