In 2014, Mendes and DoSomething.org launched their campaign called "Notes from Shawn" where fans were encouraged to write positive notes and leave them in unexpected places.
Pada tahun 2014, Mendes dan DoSomething.org meluncurkan kampanye mereka bernama "Notes from Shawn" dimana para penggemar disemangati untuk menulis catatan positif dan meletakkannya di tempat-tempat berbeda.