> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.perkzilla.com/sitemap.xml
> Use this file to discover available pages before exploring further.
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# Using the Opt-in Link

# Using the Opt-in Link

**The one-click opt-in link allows you to effortlessly add new users from your existing lists to your PerkZilla Campaign!**

1. Go to [Additional Settings](https://app.perkzilla.com/campaign-additional-settings/optin-link) for the campaign you'd like to use.

![](https://storage.crisp.chat/users/helpdesk/website/639fb8328531b400/screen-shot-2022-08-18-at-7512_s9ax3r.png)

2. Click on Opt-in link and then COPY the link to your clipboard

![](https://storage.crisp.chat/users/helpdesk/website/639fb8328531b400/screen-shot-2022-08-18-at-7541_1w4orw2.png)

3. Replace [Subscriber Email] with the actual email you'd like to add or your autoresponder / integration partner shortcode

### For Example:

`https://app.perkzilla.com/optin-signup.php?u=1dabb548f7aa6ddd90672e4119244e0fVhanMuX5yWp%2FHJbO2bCFmw%3D%3D&c=cfff707806191732fc15a620f4420548&e=[Subscriber Email]`


### For a single email would be

`https://app.perkzilla.com/optin-signup.php?u=1dabb548f7aa6ddd90672e4119244e0fVhanMuX5yWp%2FHJbO2bCFmw%3D%3D&c=cfff707806191732fc15a620f4420548&e=demo@test.com`


### Or for say with a MailChimp shortcode

`https://app.perkzilla.com/optin-signup.php?u=1dabb548f7aa6ddd90672e4119244e0fVhanMuX5yWp%2FHJbO2bCFmw%3D%3D&c=cfff707806191732fc15a620f4420548&e=*|EMAIL|*`


As MailChimp uses this structure for their email fetching, meaning you could add the code snippet to the end of a link in your emails, and automatically opt-in new users to the campaign in a single click - bypassing the confirmation email for existing users!


![](https://storage.crisp.chat/users/helpdesk/website/639fb8328531b400/screen-shot-2022-08-18-at-8032_7aqcpf.png)


|| if you'd like to input the users first and last name, you can add the respective string `&fn=[Subscriber First Name]&ln=[Subscriber Last Name]` or simply `&n=[Subscriber Full Name]` to add a single name. 

| Your default opt-in link will adapt automatically based on your form settings!