Dr. Hidaia Mahmood Alassoulii 
Evaluation of Some SMTP Testing, Email Verification, Header Analysis, SSL Checkers, Email Delivery, Email Forwarding and WordPress Email Tools [EPUB ebook] 

Simple Mail Transfer Protocol (SMTP) is a set of rules used while sending emails. Usually, this protocol is associated with IMAP or POP3. However, SMTP is utilized to deliver messages, while POP3 and IMAP are utilized to receive them.
The  SMTP testing tool identifies issues with email security in your server that can hinder your email delivery. It checks the health status of your outgoing email server and notifies you about the detected problems, such as connectivity issues, and how to tackle them. An SMTP test tool can identify SMTP server issues and troubleshoot them to keep your email secure and safe.
The SSL Checker tool can verify that the SSL Certificate on your web server is properly installed and trusted.
Header Analyzers can help you view and analyze message headers by displaying the information in a user-friendly manner and also by calling out various issues, such as suspected delivery delays that may require your attention.
Cloudflare, Inc. is an American company that provides content delivery network services, cloud cybersecurity, DDo S mitigation, and ICANN-accredited domain registration services.
Registration of international domains can be done through https://NIC.UA website.
Mailtrap.io  is Email Delivery Platform for individuals and businesses to test, send and control email infrastructure in one place.
You can use the built-in Send-Mail Message cmdlet to send SMTP e-mails from Power Shell.
Infinityfree.com provide free website hosting with PHP and My SQL and no Ads in your website.
WP Mail SMTP is the best Word Press SMTP plugin that allows you to easily send Word Press emails using a simple mail transfer protocol (SMTP).  If you send an email via your Word Press form, you will then be able to keep track of it.
The book consists from the following sections:
1. Types of DNS Records.
2. SSL and TLS Certificates:
3. Replacing the Default Forti Mail Certificate:
4. Header Analysis:
5. Some Tools for Email Verification.
6. Evaluation of Some SMPT Testing Tools.
7. Microsoft Remote Connectivity Analyzer.
8. Creating Free Domain in https://nic.ua and Linking it to Cloudflare.com.
9. Mailtrap.io Email Delivery Platform.   
10. Sending Emails Using Windows Power Shell.
11. Free Web Hosting from infinityfree.com.
12. Installing Different Types of Plugins Related to Mail  on the Word Press Website.
13. Setting Up a Business Email and Email Forwarding Through Improvmx.com.
14. SSL Certificates Checkers.
15. References.