Jordi Cabot

In the Settings->Discussion page, authors of a post can use the checkbox Email me whenever – Anyone posts a comment.
But this does not send an email as well to the site admins. In blogs where you have a number of guest authors, you may want to be informed about all the new comments so you can respond (if the author is missing) or just participate in the discussion.
As a site admin myself, I was missing many comments. This means plenty of missing opportunities to engage with your audience.
To solve this situation, the plugin adds a new checkbox in the Discussion page. If checked, admins will get an alert email for new comments.

Comment Admin Notifier

Very simple plugin that doesn't try to do many things. But the one it does is very useful: as a website owner you want to make sure you're on top of all the comments in the site even comments to posts you didn't write. 

It does one thing and it does it right

With this plugin, admin users get an email alert every time a new comment is posted on ANY post in the site.

mrdigital

Use this plugin to display an image popup for promotions, alerts, or messages. Key features include: 
– Simple activation/deactivation of the popup. 
– Choose an image from your media gallery. 
– Set a unique Popup ID to control repeat appearances. 
– Optionally link the popup image to any URL. 
– Control how frequently the popup reappears using an expiry time. 
– Delay popup display by a set number of seconds. 
– NEW: Conditionally display the popup only on selected posts or pages. 
– NEW: Enhanced accessibility: 
 – Close popup with the “Escape” key. 
 – Focus management for keyboard navigation. 
 – Aria attributes and roles for screen readers. 
– NEW: Improved admin UI so that the conditional display options only appear if enabled.

Simple Image Popup

Prosta i szybka bez zbędnych funkcji. Polecam :)

Polecam

A simple way to show a popup image on your website with various enhancements including conditional display and accessibility features.

Comment Admin Notifier vs Simple Image Popup