Just to elaborate on that, I typed out an email on Word and copied it to Yahoo Mail and I noticed that one paragraph had been hyperlinked automatically! There isn't supposed to be a hyperlink there! So, I deleted the text and typed it out again on Yahoo Mail and there was that hyperlink again. This happened several times, but eventually it allowed me to type it without a hyperlink. But after sending it, the same paragraph was hyperlinked again!
I tried clicking the link and it doesn't go anywhere. I tried copying the email text to Word and editing the hyperlink, but it just showed me that the link was empty.
I tried opening it on my Android phone - tapping the link opened a blank chrome tab, but long-pressing the link gave me this
There is no reason for the software to assume that it is a link. The entire para is just plain text, like "Once upon a time, email got weird etc. etc."
Any idea what that is? Or why some random text on my email got hyperlinked?