Speed problems in WordPress, LinkWhisper plugin suspected.

Speed problems in WordPress, LinkWhisper plugin suspected.
What is behind it?
Suspicious cloaked code discovered in website.
An MVP website or landing page is an efficient way to quickly test a business hypothesis, and WordPress is one
Create table of contents automatically with “Easy Table of Contents“.
Another plugin for sending mail in WordPress, which I personally like better than “WP Mail SMTP”.
How do I change the mail dispatch from WordPress to SMTP dispatch?