Using Email Allowlists to Restrict Flipbook Access

Not every flipbook is meant for public eyes. Whether you're distributing internal training materials, sharing confidential proposals with select clients, or delivering paid content to subscribers, you need a reliable way to control who gets access. That's where email allowlists come in.

When You Need Restricted Access

There are plenty of scenarios where a public link simply won't cut it:

• Internal company documents — onboarding guides, HR policies, or training manuals meant only for your team
• Client-specific proposals — pricing decks and contracts that shouldn't leak to competitors
• Paid digital products — ebooks, courses, or premium reports for paying customers only
• Compliance-sensitive materials — legal, financial, or healthcare documents with strict distribution rules

In all of these cases, a simple password isn't always enough. Passwords get shared, forwarded, or posted in group chats. An email allowlist ties access to a verified identity, giving you far more control.

How Email Allowlists Work in FlipLink

FlipLink's Privacy and Access Control features let you define exactly who can view your flipbook or document. When you enable an email allowlist, here's what happens:

1. A viewer clicks your flipbook link
2. Instead of seeing the content immediately, they're prompted to enter their email address
3. FlipLink checks that email against your approved list
4. If the email matches, the viewer gains access. If not, they're politely turned away

It's straightforward, effective, and completely invisible to approved viewers beyond a quick email entry step.

Setting Up an Email Allowlist

Getting started takes just a few minutes inside your FlipLink dashboard:

1. Open your flipbook settings — navigate to the document you want to restrict and click the settings icon
2. Go to the access control section — you'll find options for passwords, allowlists, and more
3. Enable Email Allowlist — toggle the feature on
4. Add approved emails — enter individual email addresses or entire domains (more on that below)
5. Save and publish — your flipbook is now restricted to only those addresses

That's it. Anyone not on your list simply cannot view the content.

Domain-Level vs Individual Email Allowlisting

FlipLink gives you two approaches to building your allowlist, and you can mix them freely:

Individual Emails

Add specific addresses like jane@company.com or client@agency.co. Best for small, controlled groups where you know exactly who needs access.

Domain-Level Access

Add an entire domain like @company.com to grant access to everyone with that email domain. Perfect for company-wide distribution where you want all employees to have access without listing each one individually.

Pro tip: Combine both methods. Allow your entire company domain for internal docs, then add a handful of individual external consultant emails on top.

Combining with OTP Verification for Double Security

Want an extra layer of confidence? FlipLink lets you pair your email allowlist with OTP (one-time password) email verification. When both are enabled:

1. The viewer enters their email
2. FlipLink checks it against the allowlist
3. If approved, FlipLink sends a one-time code to that email address
4. The viewer enters the code to prove they actually own the email

This prevents someone from simply guessing or typing in an approved email address. They must have access to the inbox itself. It's ideal for highly sensitive documents where you need to be certain about viewer identity.

Access Control Methods Compared

Each method serves a different use case. For most restricted-access scenarios, an email allowlist alone provides the right balance of security and convenience.

Required for Document Approval

If you plan to use FlipLink's Document Approval feature — where viewers can formally approve or reject a document — you'll need an email allowlist as a prerequisite. This makes sense: approval workflows need verified identities so you know exactly who approved what.

The allowlist ensures that only authorized reviewers can participate in the approval process, keeping your audit trail clean and trustworthy.

Pair It with Lead Capture

Here's a useful combination: use an email allowlist alongside Lead Capture to both restrict access and collect viewer data. You'll know not just who accessed your document, but when they viewed it and how they engaged with the content. This is especially powerful for sales teams tracking proposal engagement.

Get Started with Restricted Flipbooks

Controlling who sees your content shouldn't be complicated. With FlipLink's email allowlists, you can lock down any flipbook or document in minutes — no IT department required.

Ready to secure your documents? Create your free FlipLink account and start restricting access today. Check out our pricing page to see how the Lifetime Deal at $129 per code gives you full access to allowlists and every other security feature.