"Thank you for opening your hearts and extending your love and support during a troubling time."
In a letter to his fans and friends around the world, Cudi wrote, "I wanted to let yall know it meant the world to me. I have nothing but love for you. Words can't really express how much it made my heart glow."
Cudi checked himself into rehab last month citing depression and suicidal urges. He ended his note -- which also cites Willow Smith, Jaden Smith, Pete Wentz, Tegan and Sara, Zayn Malik and others -- on an optimistic note.