This article explains how to pre-fill opt-in form fields, such as first name or email address, by adding parameters to your page URLs.
Use it when you want to personalize an opt-in form manually with a custom link, or automatically from a Learnybox email campaign or sequence. This can improve user experience and increase form completion rates.
You can use this feature in two ways:
Manually, to test or share a custom link with a specific contact.
Dynamically, using variables in email campaigns.
Step 1: Enable Pre-fill in Form Fields
Navigate to Marketing → Opt-in Forms
Click the name of the form you wish to configure to open the form editor.
Click the form field you wish to pre-fill and locate the Pre-fill option (Content tab).
Examples:For the First Name field, enter firstname as the parameter name.
For the Email field, enter emailaddress as the parameter name.
⚠️ The parameter names you define for each form field must exactly match the ones used in your URLs.
Step 2: Manually Pre-Fill Form Fields via a Custom URL
You can use this method to test your form or share a personalized link with a specific contact when you already know their details.
The First Name field will be pre-filled with John
The Email Address field will be pre-filled with
john@gmail.com
You can paste this kind of URL into your browser address bar to test your form, or use it in a private one-to-one message.
Step 3: Dynamically Pre-Fill Fields via Email Campaigns
When sending an email through Learnybox, you can include dynamic variables in your link that automatically pull in each contact’s personal details.
Example:
https://yourdomain.learnybox.com/your-page/?firstname=[[FIRST_NAME]]&emailaddress=[[EMAIL]]
Learnybox will automatically replace [[FIRST_NAME]] and [[EMAIL]] with each contact’s actual details at the time the email is sent.
When the recipient clicks the link, their form will be pre-filled with their own data.
This is ideal for email campaigns and automated sequences where you want to personalize the form experience for every contact.