If you are looking to make a phishing testing or demonstration you can check PyPhisher. This tool was created for the purpose of phishing during a penetration test. This tool is python based that provide user a way to send emails with a customized template that he design. you can have an html format that is similar to any organization and replace the links that you want to send.
This was inspired by SpearPhiser beta by Dave Kennedy from Trustedsec and a feature found in Cobalt Strike by Rapheal Mudge from Strategic Cyber
PyPhisher.py --server mail.server.com --port 25 --username user --password password --html phish.txt --url_replace phishlink.com --subject Read!! --sender email@example.com --sendto firstname.lastname@example.org
--server The SMTP server that you are going to be using to send the email --port The port number that is setup for SMTP --html The pre-crafted html that will be used in the email --url_replace The url that will be used to replace all links in the email --subject The subject that will appear in the email message --sender The sender that will appear on the email example --sendto Who you would like to send the email to