This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

OnePress Opt-In Panda


Boost Converting Visitors Into Subscribers & Customers

Opt-In Panda locks a portion of content on a webpage by hiding it and asks the visitor to enter one’s email address (opt-in) to unlock your content.

Screenshots | Try Live Demo >>

Opt-In Panda gives visitors a reason to subscribe right now in return to instant access to your valuable content (e.g. downloads, discounts, videos and so on).

Hide your premium content behind an optin form (subscription widget) and watch your email subscription rates burst through the roof. Easily create in-content freebies and serve them to your subscribers only.

With Opt-In Panda, you will be able:

  • Effectively and easily convert visitors into subscribers.
  • Build large mailing lists on MailChimp, Aweber, GetReponse (and other services).
  • Send more emails and increase your income.

Single Opt-In, Double Opt-In and Quick Email Confirmation

The plugin equally well works with Single Opt-In (without email confirmation) and Double Opt-In (with email confirmation) modes. Only you decide which mode to use.

We done our best to make the Double Opt-In email confirmation process as quick and pleasant as possible.

Without refreshing the page! See how it works.

Add Subscribers Directly To Your Favorite Mailing Service

The Opt-In Panda integrates directly with all the major mailing services and plugins:

  • MailChimp
  • Aweber
  • SendGrid
  • SendinBlue
  • MyMail
  • MailPoet
  • ActiveCampaign
  • GetResponse
  • Acumbamail
  • Sendy
  • FreshMail
  • K-news
  • SmartEmailing
  • SG Autorepondeur

Also supports any transactional mailing services (for example, Mandrill, Postmark, Mailjet, Amazon SES) and SMTP after installing respective WordPress plugins.

Moreover, the plugin saves all received email contacts locally in the database.

Track Your Results with Built-in Advanced Analytics

The plugin collects the full stats (impressions, conversions) on how your lockers perform on pages of your websites.

Easily identify which lockers on which pages are out-performing others, how to optimize your lockers and what you could do differently to improve your results.

Other Key Features

The plugin also is packaged with the following features:

  • SEO Friendly. Your locked content is still visible for search bots for better SEO by default. Of course you can turn off this feature.

  • 4 Types of Locks. Lock any content manually via shortcodes or setup batch lock via one of 3 powerful modes (“Skip & Lock”, “More Tag”, “CSS Selector”).

  • Visual Composer. The Opt-In Panda is fully compatible with the Visual Composer.

  • Optimized For Mobile. We have adapted the plugin for mobile devices. Mobile users can obtain access to your locked content as well as desktop users.

  • Fast Loading. The plugin is well optimized and doesn’t add extra loads on your website. Confirmed with tests from the P3 plugin and New Relic.

  • Developer Friendly. Use the plugin events (Unlock, Lock, Ready) and hooks for customization and creating your own extensions.

Go Premium – More Subscribers & Customers

It’s a free edition of the premium plugin Opt-In Panda. Although the free version
is full-featured and you can use it without any limits, the premium version provides more features:

  • Pola niestandardowe
  • Export Leads In CSV
  • 2 Extra Themes
  • Content Blurring
  • 8 Advanced Visability Options
  • Hide Lockers For Registered Users
  • Countdown Timer & Close Cross
  • ReLock & Delayed Lock
  • Loading the locked content via Ajax
  • Dedicated support and more!

Go Premium >>

Need Support, We Got You Covered

All of our plugins come with free support. We care about your plugin after purchase just as much as you do.
We want to make your life easier and make you happy about choosing our plugins. We guarantee to respond to every inquiry within 1 business day.
Please visit our help desk.

Zrzuty ekranów

  • Sposób użycia


Install and activate the plugin.
You will find ‚Opt-In Panda’ menu in your WordPress admin panel.
Use the shortcode [emaillocker] your content [/emaillocker] in post editor to lock content.


3 sierpnia 2019
While this plugin does the job well, there is a persistent 'Try the premium version for 7 days for free!' message in the dashboard that you cannot permanently disable. Click the 'No, thanks, not now' button and the message will reappear in a few days. Plugins like this that abuse WordPress notifications and run nagging ads are turning the dashboard into an ad-filled nightmare. Please add an option to permanently remove the ad instead of constantly bugging us.
14 stycznia 2019
I checked a bunch of other plugins and was almost resolved to tackle the dreaded Mailchimp API myself. OptInPanda saved the day and allowed me to set up my email collecting 'paywall' quickly and easily.
3 czerwca 2018
Used to love this plugin but recently all of my readers have received an error to say 'invalid resource' when trying to sign up to my list. I have to pay to get technical support. Don't want to pay for a service that isn't in working in the first place.
21 lutego 2019
EDIT: Updated review Feb 21, 2019 I used the free version and for a single locker I was happy and used to give this plugin 5 stars. It offers some features and simplicity most of the other content lockers don't. However, after encountering buggy behaviour when using TWO independant lockers and reporting it to them, I got no help. They recommend using their own support/ticketing system instead of the support forums here on, so that's what I did. Their automated system response says: "Please, be patient, we will respond to your inquiry within 2 business days." After a week or so of no response, I sent in a second ticket. It took 30 DAYS before I got a response, and all it said was basically "sorry for the delay, do you still need help?" I replied telling them to re-read the ticket as yes it's still an issue. ... NO REPLY FROM THEM SINCE. Since then, WordPress 5 has been released and this plugin still shows as tested only up to 4.9.9 so. SO, if you need one single locker, try out the free version. It seems to still work with WP 5, but like I mentioned above, more than one locker will not work as expected.
Przeczytaj 46 recenzji

Kontrybutorzy i deweloperzy

„OnePress Opt-In Panda” jest oprogramowaniem open source. Poniższe osoby miały wkład w rozwój wtyczki.


Log zmian

v.2.3.0 – 18 Dec 2018

  • ADDED: Support for WordPress 5 and Gutenberg.
  • UPDATED: Instructions on how to create social apps.
  • FIXED: A set of minor bugs.

v.2.2.6 – 9 Jul 2018

  • FIXED: The error in the file leads.php #350.

v.2.2.5 – 8 Jul 2018

  • ADDED: Zapier integration. Send data collected with your lockers to Zapier and then automatically pass them to thousands of web apps supported by Zapier.
  • ADDED: Blocking Temporary Emails Addresses. Get only real leads interested in your services (optional).
  • ADDED: Support for PHP 7. Speed up your WordPress site by running it on the newest PHP version.
  • UPDATED: The Help Section was supplemented by new pages: Zapier Integration, SSL Certificate.
  • FIXED: A set of minor bugs.

v.2.2.1 – 24 May 2018

  • ADDED: GDPR compatibility.
  • ADDED: An option to display the Consent Checkbox to process personal data received via lockers.
  • ADDED: Support for fields added as custom HTML code.
  • FIXED: A bug when the plugin displays the limited number of MailChimp groups.
  • FIXED: Minor bugs.

v.2.0.7 – 21 Jan 2018

  • ADDED: Custom fields in notifications when new leads are gained.
  • FIXED: ActiveCampaign integration (custom fields).

v.2.0.5 – 19 Jan 2018

  • FIXED: Fixed a lot of major and minor bugs.

v.1.5.6 – 1 Sep 2017

  • FIXED: MailChimp Invalid Resource error.

v.1.5.5 – 24 Aug 2017

  • ADDED: Support for MailChimp Groups.
  • ADDED: Support for MailPoet 3.
  • UPDATED: Guides on how to register apps on Facebook and Google.
  • FIXED: Minor bugs.

v.1.5.1 – 9 May 2017

  • ADDED: In-App Browsers option – control how the locker should behave in mobile in-app browsers (Facebook In-App browser, Twitter In-App browser, Instagram In-App browser, VKontakte In-App browser). Check it out on the page Global Settings -> Lock Options.
  • FIXED: A bug of the page Leads when only the first 20 leads are visible.
  • FIXED: A bug of the Visibility Conditions when the locker doesn’t appear if any Advanced Visibility Conditions are set.
  • FIXED: Minor bugs.

v.1.5.0 – 10 Apr 2017

  • ADDED: Lock Delay – make the locker to appear only after a specified interval.
  • ADDED: Permissions Settings – configure roles and permissions for getting access to the plugin features.
  • ADDED: Notifications – get email notifications about new leads and unlocks.
  • ADDED: Clone Feature – quickly create new lockers based on options of existing ones.
  • ADDED:Support for Facebook API v.2.8
  • IMPROVED: MyMail, Mailster and MailPoet integrations.
  • IMPROVED: Compatibility with mobile devices.
  • IMPROVED: Performance optimization.
  • FIXED: Minor bugs.

v.1.4.1 – 19 Sep 2016

  • IMPROVED: Integration with SendinBlue.
  • IMPROVED: Integration with MailChimp.
  • FIXED: A lot of minor bugs.

v.1.4.0 – 19 Jun 2016

  • NEW: Integration with SendGrid.
  • NEW: Integration with SG Autorepondeur.
  • NEW: Added the Double Opt-In option for all autoresponders/services what have not supported it earlier.
  • NEW: Added the Lazy Loading option for Sign-In Locker (if enabled, the plugin loads social scripts only when the locker gets in focus of the user’s window)
  • FIXED: Some MyMail bugs.
  • FIXED: Some Aweber bugs.
  • FIXED: Some MailPoet bugs.
  • FIXED: A lot of minor bugs.

v.1.3.2 – 14 Feb 2016

  • FIXED: A lot of minor bugs.

v.1.2.6 – 12 Oct 2015

  • NEW: Added support for ActiveCampaign.
  • NEW: Added support for Sendinblue.
  • NEW: For autoresponders that support at the same time single and double opt-in modes, the sign-in locker doesn’t ask the user to confirm one’s email after subscription via social networks.
  • IMPROVED: The button Twitter Sign-In now receives an email address of the user (by default works only with the default Twitter app, for custom apps, please see the updated section „How to create a Twitter app” in the help section of the plugin).
  • IMPROVED: Added support for Facebook API v.2.5.
  • IMPROVED: Compatibility with websites using SSL.
  • FIXED: A bug when Facebook does not return an email of the user when using Facebook API v.2.4+.
  • FIXED: A set of security issues.

v.1.2.5 – 26 Aug 2015

  • NEW: Compatibility with WP 4.3.
  • NEW: The Debug option explains now why the locker is not visible (Global Settings -> Lock Options -> Debug).
  • IMPROVED: Compatibility of the options CSS Selector and Dynamic Theme.
  • FIXED: A set of bugs of the Batch Lock.
  • FIXED: The bug when the links Terms and Privacy Policy point to the same page.
  • FIXED: The option Highlight.
  • FIXED: A set of security issues.

v.1.2.1 – 7 Jul 2015

  • FIXED: A set of minor bugs.

Important: if you use CDN, please purge your CDN after installing this update.

1.2.0 – 04 Jul 2013

Initial release.