404 Page Opt-In Form

Convert 404 error pages into high-converting lead capture moments. Use this Capture template to turn broken links and “page not found” traffic into valuable email subscribers while preserving your brand voice and user experience.

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404 Page Opt-In Form

Run this campaign on your website to recover lost traffic, boost engagement, and offer incentives to users who encounter a dead link. Perfect for startups, SaaS products, blogs, or any business with frequently changing content.

Template Features

Triggered only when users land on a 404 error page
Email capture with GDPR-compliant consent
Customizable messaging and branding
Optional incentive: freebie, upgrade, or end-of-year prize draw
Redirect fallback to a relevant internal page
“Report this link” logic using webhook or email
Fully responsive and brand-aligned design

Gleam’s 404 Capture tools help transform common errors into smart opportunities. You gain qualified leads while providing users with a helpful, brand-aligned response.

Benefits of Adding a Capture to Your 404 Page

A custom 404 page is more than just web design — it is a conversion tool. Instead of leading users to a dead end, use this moment to guide them back into the funnel.

You will:

Collect leads from visitors landing on a 404 page
Offer helpful content, opt-in options, or redirect suggestions
Track 404 errors and gather broken link data
Maintain trust with on-brand copy and visuals
Deliver value through promotional product offers or newsletter content

If your site includes older internal links, frequently updated product listings, or active SEO campaigns, this setup helps reduce bounce rates and boost user retention.

Who Should Use This Template

This Capture template is ideal for:

Startups and SaaS brands with evolving landing pages
Bloggers managing archives and redirects
Ecommerce sites with seasonal promotional product rotations
Marketers aiming to boost brand awareness and reduce user drop-offs

If your site experiences high 404 volumes, this is a high-impact solution to reclaim traffic and enhance your brand experience.

Integration Support

This template runs on the Gleam Captures App and supports advanced Rules & Triggers for showing content on 404 error status codes.

You can also:

Trigger webhooks or send reports for each 404 event
Redirect users to relevant internal link pages after submission
Sync captured leads with your email marketing platform

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Popup Ideas to Grow Sales and Collect Emails

How a Custom 404 Error Page Can Turn Lost Visitors Into Leads

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Follow these steps to quickly launch a 404 page opt-in form that converts lost traffic into leads, offers value, and supports your marketing strategy:

Customise Your Design

Design your popup with an engaging layout, on-brand messaging, and a clear call to action. You can adjust size, colours, images, fonts, and layout styles using Gleam’s flexible editor.

Need a title idea? Try:

Oops! Let Us Make It Up to You
Something Broke, But You Win
Found a 404? Score a Reward!
Wait, What Happened? Join Our List Anyway

Use Gleam’s Layouts & Variations to tailor the experience to match your website design and voice.

➡ Learn How to Customise Your 404 Page Design

Set Behavioural Rules & Triggers

Gleam’s Behavioural Rules let you show this Capture only when a user lands on a 404 page.

This template uses the Selector rule, configured to detect an <h1> tag containing "404" on the page. You can modify this to match your site’s specific error layout or language.

➡ Explore Gleam's Behavioural Rules

Connect to Your Email Platform

Integrate your email service provider so that captured leads are automatically synced to your marketing list. You can also segment 404 leads for future re-engagement or product updates.

➡ How to Connect Your Email Provider

Add Terms for UGC or Rewards (Optional)

If you are offering an incentive or plan to use submitted responses in marketing, be sure to include clear Terms and Conditions.

Example:
“By submitting your email, you agree to receive updates and allow us to use this data for marketing purposes.”

You may also offer a reward (e.g., a freebie or discount) or entry into a larger end-of-year prize draw.

Install the Capture on Your Website

Once you are happy with your design and setup, install the Capture using Gleam’s simple embed code. You only need to place one line of JavaScript on your site.

➡ Learn How to Install Your Capture