Jelly Bean :: Galaxy S3 - Stock Email Client Autofill Addresses / How To Edit

I have had my phone nearly a year and how it's got a cache of people I've sent emails to, because sometimes I want to retrieve an address I didn't think I'd need again... However, it also presents some annoying issues. It also saves every typoed address I've ever fat-fingered, and sometimes it comes up as the first choice when it was for someone in my contacts, and I then send a message to a bad address. If you go to write an email and press that little 'contact' button in the "To" field area, it shows me a list, and I don't know where some of those are coming from - it's some but not all of my contacts and some but not all of the addresses I've ever written to. I would like to clean out the fat-finger errors and also that mysterious list that comes up when you press the little contact icon when composing an email, without taking a scorched-earth approach. Googling around indicates to me that this has annoyed people for years and nobody's found a solution.

I have a Galaxy S3 running the recent update to 4.3.