I just found out that certain agencies throw away fan mail. I watched this girls YouTube video about it and she had a list of bad addresses. The video is 4 years old

Companies that do not pass fan mail on:
- APA (agency)
- WME (William Morris Endeavors)
- Untiled Entertainment
- Paradigm Talent Agency
- Management 360 (rare)
- Viewpoint (rare)
- United Talent Agency
- Gersh (LA/NY) Agency
- CAA (Creative Artists Agency)
- Innovative Artists Agency
- CESD (very rare)
- PMK BNC / Rogers & Cowan
- ID PR
- Any major record label (Sony, Universal Music Group -rare-, Warner Music Group and most of their labels)
- Abrams Artists Agency (now called
A3) email will NOT work. Mailing most likely WILL work.