Hello @maria_barreda and welcome to the Community. If you want to make a hyperlink to your email address., you will want to follow these directions (for the Old RCE)
https://community.canvaslms.com/t5/Instructor-Guide/How-do-I-create-a-hyperlink-in-the-Rich-Content-... or these for the New RCE.
I do know how to add a link in the RCE, what I need is get the link for a message to instructor, not email but to the Canvas Inbox. I know how to get the link to the inbox, but I have very young students who will get lost when they have to look for my course and then for my name to be able to contact me.
I went to the Inbox in my course, and did the search for my class and me. I got a URL. This I linked to my homepage. See if this works for you. Best of luck!
Hi @maria_barreda ...
I know that you said you have very young kids in your course, but I wanted to offer one additional possibility. Would you be open to sending your students to the "Help" menu in your course and then to the "Ask Your Instructor a Question" link? See this Guide for more details: How do I get help with Canvas as a student?.