Would I be able to just copy a epub to my Kindle Paperwhite 7th Generation? Or it will work just using "Send to Kindle"? I've just generated a personal e-book

Would I be able to just copy a epub to my Kindle Paperwhite 7th Generation? Or it will work just using "Send to Kindle"? I've just generated a personal e-book in epub and it was really annoying to convert it to Kindle to load in the device.