Skyy

This plugin allows you to banned certain username from making comment, particularly when you don’t want to ban 
ip addresses, but want to stop certain “notorious” misbehaving users.
If your blog requires user registration, you should really try the “members.0.1.1” wordpress plugin.

WP-Ban-User

Syed Balkhi

Md Abul Bashar

Jared Atchison

Gregor Capuder

Do you want to change the WordPress default from email address and from name?
This is the plugin for you! It allows you to change the from email address and name for all emails sent from your WordPress site.
Are your WordPress emails not being delivered?
If you have issues with email deliverability, then just changing the from email address and name will usually not resolve the issue.
In order to fix your WordPress emails not reaching your inbox, we suggest installing the <a href="https://wordpress.org/plugins/wp-mail-smtp/" rel="ugc">WP Mail SMTP</a> plugin.
WP Mail SMTP is trusted by more than 3 million websites. It will fix the deliverability problems with one of your favourite email providers: Gmail, Outlook, SendLayer, Mailgun, and many more.

Change Mail Sender

nice very simple plugin, but i would prefer having the settings within the Settings sections and not having a separate section for such a small feature.

simple, works on wp 5.4 BUT

It does one job, and it does it great!

Since it's a set and forget option, it doesn't need its own root menu item. Grouping it under settings, or even under Settings > General, where the other email's are set, would be a much better place.

Does a great job. Root menu item is a bit unnecessary, though.

Easily change the default WordPress from email name and from email address.

WP-Ban-User vs Change Mail Sender