Zero problem. I have used this exact setup with my domain for over 23 years. First, it's rare that I had to give my email over the phone or something. And in the couple of times someone raised an eyebrow, it was an opportunity to educate the person that yes, "donotspamYOURCOMPANY@" is indeed a valid address (not exactly what I use, but similar).

The advantages are numerous: tracking who leaked my data (many times before the company even noticed it), easier to spot spam (20 years ago spam filters were a lot less sophisticated), minimize credential stuffing (before Pwd Managers became the norm), etc.