Harshit

Automatically subscribes your users so that they can be notified of any new content on the main site using one of the following plugins –
<ul>
<li><a href="https://premium.wpmudev.org/project/subscribe-by-email/" rel="nofollow ugc">WPMU’s Subscribe by Email plugin</a>.</li>
<li><a href="https://wordpress.org/plugins/email-subscribers/" rel="ugc">Email Subscribers & Newsletters</a>.</li>
</ul>
Note
<ul>
<li>In a multisite WordPress install, all the users creating new sites will automatically subscribed to the main site’s new content.</li>
<li>In a single WordPress installation, all users registering to the main site or getting added by other admins will be automatically subscribed to the main site’s new content.</li>
</ul>

Auto Subscribe Users

Helps us automatically subscribe all our new users being added to the multisite network in order send them notifications regarding new updates/important notifications regarding our service.



Works as described

Automatically subscribe your users, so that they can be notified of any new content on the site.

Daniel Westermann-Clark

By default, WordPress network usernames cannot contain anything but lowercase letters and numbers. This plugin adds network options to let you include hyphens, underscores, or uppercase letters, if desired.
Furthermore, this plugin gives you the option to allow email addresses as usernames, or to allow all-numeric usernames (e.g. “1234”).
Finally, this plugin lets you override the minimum length for usernames (which defaults to four characters).
To follow updates to this plugin, visit:
https://danieltwc.com/
For help with this version, visit:
https://danieltwc.com/2011/network-username-restrictions-override-1-0/

Network Username Restrictions Override

Does what it says!

Override restrictions on WordPress network usernames.

Auto Subscribe Users vs Network Username Restrictions Override