Sudar Muthu

This plugin is a quick way to delete all pending and spam comments. It’s useful for victims of spammer attacks.
After installing the plugin go to Comments -> Delete Pending Comments and follow the instructions to delete all the pending comments.
<h3>Credits</h3>
This plugin was originally developed by <a href="http://www.nkuttler.de/" rel="nofollow ugc">Nicolas Kuttler</a> and he maintained it till June 24, 2020.
From June 24, 2020, <a href="https://sudarmuthu.com" rel="nofollow ugc">Sudar Muthu</a> took over the development and maintenance of the plugin.

Delete Pending Comments

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Apparenty no longer works...

'There's a plugin for everything', sure, but this one solved a problem I've been having for a LONG time... Thanks!

Easy and quick, almost as if nothing happened at all :)

AWESOME

A quick way to delete all pending and spam comments. Useful for victims of spammer attacks.

shmider

A small and easy to use plugin for removing pending comments using search keyword. 
Yes, there is no need to go into the database, just set a keyword and all the comments contains that keyword will be deleted. 
You can also get the number of pending comments contain the keyword before actually removing them.

WP Comments Remover

A small plugin to remove pending comments using a search keyword.

Delete Pending Comments vs WP Comments Remover