Allow Multiple Accounts

By default, WordPress only allows a single user account to be associated with a specific email address.

This plugin removes that restriction.

An admin settings page (accessed via Users -> Multiple Accounts or via the Settings link next to the plugin on the Manage Plugins page) is also provided to allow only certain email addresses the ability to have multiple accounts (such as if you only want admins to have that ability).

The admin can set limits to how many accounts an email address can have.

The settings page for the plugin also provides a table listing all user accounts, grouped by the email address.

Installation:

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

What is new in this release:

• Reimplement necessary workaround to WP's shortcoming in facilitating repeated use of email addresses
• Fix outdated error handling
• Fix has_exceeded_limit() to account for 'account_limit' not being set and 'allow_for_everyone' being false
• Fix has_exceeded_limit() to account for 'account_limit' not being set and 'allow_for_everyone' being true
• Omit listing email addresses associated with only 1 account on the settings page "Email Addresses with Multiple User Accounts" listing
• Add new hack functions: hack_pre_user_login(), hack_pre_user_login(), hack_restore_remapped_email_address()
• Remove long deprecated functions: count_multiple_accounts(), get_users_by_email(), has_multiple_accounts()
• Remove no longer needed hack functions

What is new in version 3.0.2:

• Reimplement necessary workaround to WP's shortcoming in facilitating repeated use of email addresses
• Fix outdated error handling
• Fix has_exceeded_limit() to account for 'account_limit' not being set and 'allow_for_everyone' being false
• Fix has_exceeded_limit() to account for 'account_limit' not being set and 'allow_for_everyone' being true
• Omit listing email addresses associated with only 1 account on the settings page "Email Addresses with Multiple User Accounts" listing
• Add new hack functions: hack_pre_user_login(), hack_pre_user_login(), hack_restore_remapped_email_address()
• Remove long deprecated functions: count_multiple_accounts(), get_users_by_email(), has_multiple_accounts()
• Remove no longer needed hack functions

What is new in version 2.0.1:

• Update plugin framework to C2C_Plugin_016 (fixes WP 2.9.2 compatibility issues).

Requirements:

• WordPress 3.6 or higher