Is the telephone number, website and/or email address underlined in the signature?

In Boost My Mail, the absence of underlining on links is explicitly configured. However, depending on the tools used, underlining is frequently added dynamically following processing by software that creates an overlay when an email is sent, making the element, such as the telephone number or email address, clickable. Unfortunately, in this case, there is no solution to prevent the processing carried out by the third-party software.