Better Search Replace is the best WordPress plugin to search and replace any text in all the posts in your WordPress site
In functions.php, add the following line at the end remove_filter( 'the_content', 'wptexturize' );
Use Contact Form and Post SMTP free plugins to setup mail settings in WordPress website
Consider restricting themes and plugin editor from Admin Panel to prevent hackers who break into your website to distribute malware or conduct DDOS.
You might experience the following upload error in WordPress: Unexpected response from the server. The file may have been uploaded successfully.
Without using any external WordPress plugin, you can still disable Gutenberg with these codes in functions.php
Here is how to add a checkbox option to every new post of whether or not to email the post to Jetpack subscribers. Use the following code.