Never email or text an employer that you are quitting the internship. You need to face the issue and call them or speak to them in-person. Stay polite, be honest, and things will be fine. Make sure you thank the employer for their time and let them know their time is valuable.
At this point, they’ve probably spent a significant part of their time training you and supervising you, so you want to make sure that you come across grateful. Just like you wouldn’t break up with someone over email — don’t leave your internship over emai