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How to Restrict Usernames and User Emails in WordPress

Are you aware that there are over 75 million websites built using WordPress? With such a large user base, it’s important to ensure that usernames and user emails are restricted to maintain security and prevent unauthorized access.

In this guide, we will show you how to easily restrict usernames and user emails in WordPress. By following a few simple steps, you can add custom restrictions and even set up personalized error messages for a seamless user experience.

Plus, with the support of plugins and a dedicated support section, you’ll have all the help you need along the way.

So let’s get started and learn how to keep your WordPress site secure by restricting usernames and user emails.

Why Restrict Usernames and User Emails

You should restrict usernames and user emails in WordPress to enhance security and maintain community standards.

By allowing users to choose any username and email during registration, you expose your site to potential security risks. Restricting usernames and emails helps prevent confusion by disallowing users from selecting usernames that are similar to admins, moderators, or support staff. This maintains clarity within the community and avoids any potential misunderstandings.

Additionally, restricting usernames and emails helps maintain high standards by preventing the use of offensive or trademarked words. By implementing a plugin, you can easily set up restrictions and customize error messages when users attempt to register with restricted usernames or emails. This not only improves security but also enhances user experience by guiding them to choose appropriate alternatives.

Choosing the Right Plugin for Restricting Usernames and User Emails

To find the most suitable plugin for restricting usernames and user emails in WordPress, it’s important to consider the specific features and customization options available.

One option is the Restrict Usernames Emails Characters plugin. This free plugin allows you to restrict certain words and phrases in usernames and email addresses. It offers customization settings, allowing you to disallow specific characters and symbols, control language preferences, and prevent specific email addresses, email domains, and certain words in usernames.

Additionally, you can customize error messages for different registration situations, guiding users to choose appropriate usernames and emails. The plugin is compatible with single site, multi-site, and BuddyPress installations, making it a versatile choice for WordPress websites.

Installing and Activating the Plugin

To install and activate the plugin for restricting usernames and user emails in WordPress, simply follow these steps.

First, go to the WordPress dashboard and navigate to Settings » Restrict Usernames Emails Characters. In the plugin settings, you can choose to restrict usernames, email addresses, symbols, and more.

Activate the plugin and make sure it’s enabled in the General Settings tab. This will enable the plugin to start enforcing the restrictions on usernames and emails.

Additionally, in the ‘Not allow these emails’ section, you can specify specific email addresses that you want to prevent users from using.

After activating the plugin, it will start working immediately, preventing users from registering with restricted usernames and email addresses.

Configuring Usernames Restrictions

To configure usernames restrictions in WordPress, follow these steps:

  1. Open the WordPress dashboard and navigate to the ‘Settings’ tab.
  2. Click on ‘Restrict Usernames’ to access the plugin’s settings.
  3. In the ‘Username Restrictions’ section, you can enter specific words or phrases that you want to restrict from being used as usernames.
  4. You can also enable the ‘Disallow Email as Username’ option to prevent users from using their email addresses as usernames.
  5. Save the changes and the configured username restrictions will take effect immediately.

Adding Email Restrictions

When adding email restrictions, you can enhance security and prevent unauthorized access to your WordPress website.

The Restrict Usernames Emails Characters plugin allows you to restrict specific email addresses in the ‘Not allow these emails’ section. You can also customize error messages to inform users about any email restrictions during the registration process.

Additionally, the plugin offers settings to restrict email domains, prevent users from using email addresses as usernames, and block specific domain names in email addresses.

To further customize email restrictions, you can implement a custom function at the pmpro_registration_checks.

Customizing Error Messages for Restricted Usernames and Emails

You can enhance the user experience by customizing error messages in the Restrict Usernames Emails Characters plugin. This allows you to provide clear guidance to users when they encounter registration issues related to restricted usernames and emails.

Customizing error messages for restricted usernames and emails offers several benefits:

  1. Clear instructions: Custom error messages can inform users about the specific restrictions for usernames and emails during registration. This helps them understand the limitations and make appropriate choices.
  2. Guidance: Personalized error messages provide clear instructions and guidance to users. This ensures they understand the reasons behind the restrictions and can rectify the issue.
  3. Effective communication: Tailoring error messages in the plugin allows website administrators to effectively communicate the importance of appropriate usernames and emails to users. This promotes a more informed and user-friendly registration process.

Testing and Troubleshooting the Restrictions

Testing and troubleshooting the restrictions involves examining the functionality and effectiveness of the plugin’s limitations on usernames and emails.

To test the restrictions, try registering with usernames and email addresses that should be restricted, such as admin, moderator, support, or offensive or trademark words. Pay attention to the error messages encountered during registration attempts to ensure they effectively guide users in choosing appropriate usernames and emails.

Make sure to verify the customization settings of the plugin to ensure that the restrictions for usernames, email addresses, symbols, and language preferences are correctly configured. If any issues arise, seek support from the plugin’s support section or mailing list.

It’s also worth exploring custom function solutions for alternative methods of restriction and customization beyond relying solely on plugins.

Additional Tips for Managing Usernames and Emails in WordPress

To ensure effective management of usernames and emails in WordPress, consider implementing a range of additional strategies.

  1. Utilize customizable error messages: Take advantage of the feature that allows you to customize the error messages displayed to users when they try to register with restricted usernames or emails. This will help guide users in choosing appropriate usernames and emails.
  2. Implement a custom function for more control: Consider using the pmpro_registration_checks function to exert more control and customization over username restrictions. This will allow you to tailor the restrictions to your specific needs and requirements.
  3. Explore alternative solutions if needed: If the existing plugins or methods you’re using don’t effectively restrict email addresses as usernames, explore other plugins or solutions available. It’s important to find a solution that meets your requirements and provides the desired level of username and email management.

Frequently Asked Questions

How Do I Restrict Usernames in WordPress?

You can restrict usernames in WordPress by using plugins. Add custom usernames to the restrictions list to prevent users from registering with those details. Custom error messages can guide users for a better experience.

How Do I Limit Users Access in WordPress?

To limit user access in WordPress, you can use plugins that restrict usernames and emails. By adding blocked details to the restrictions list, users won’t be able to register. Custom error messages can guide them towards appropriate alternatives.

How Do I Restrict Content to Registered Users in WordPress?

To restrict content to registered users in WordPress, you can use plugins that allow you to add restricted words or phrases for usernames and prevent specific email addresses. Custom error messages guide users to choose appropriate options.

How Do I Restrict Email Domains in WordPress?

To restrict email domains in WordPress, use plugins like Restrict Usernames Emails Characters. Add specific domains to the restrictions list, preventing users from registering with those email addresses. Customize error messages for a better user experience.


To summarize, restricting usernames and user emails in WordPress is a simple and effective way to enhance user registration and prevent unwanted details from being used.

By following the steps outlined in this article and utilizing the right plugin, you can easily set up restrictions, customize error messages, and ensure a better user experience on your website.

With the support and updates provided by the plugin, managing usernames and emails becomes a breeze.

Start implementing these restrictions today for a more secure and user-friendly WordPress site.

How can you restrict usernames and user emails in WordPress?

Restricting usernames and user emails in WordPress is crucial for maintaining user standards, preventing misuse, and enhancing security. By using the Restrict Usernames Emails Characters plugin, you can easily manage user registration, ensure authenticity, and prevent inappropriate usernames. This helps create a safe online community, protects brand reputation, and improves website security. Additionally, customizing error messages and user experience, preventing the use of certain email domains, and implementing additional security measures like email verification and two-factor authentication further enhance user privacy and website security.

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