Disable Welcome Emails for New Sites and Users
Stops the "Your new site" and "New user account" welcome emails WordPress multisite sends after activation, for networks that send their own onboarding.
Snippet Library
Multisite snippets for WordPress
Snippets for WordPress Multisite networks: network-wide settings, new site defaults, super admin tools and cross-site tweaks. For network administrators who manage many sites from one install.
Redirect wp-signup.php When Registration Is Closed
Sends visitors who land on wp-signup.php to a page you choose (or the homepage) when network registration is turned off, instead of showing a bare "Registration has been disabled" screen.