An email will hardly prove anything. Looking at your post history (Sure, it's been years), you look like a completely different person.
Now I won't judge too much, numerous things can happen which would change someones style of writing but in your case it is quite extreme.
Until address can be signed or other form of signing method I'll be in doubt. Could be wrong but that's just what it looks like (Especially since you instantly started voicing strong opinions after being inactive for years).