[Néa] I tend to use a first name and a colon. It's my style. For example:

Dear Samantha:

Isn't it about time you got off Humphrey's hand? I should think it was quite uncomfortable.

All the best,

Nights.

I think of an email as being a less formal letter - with an opening, closing and all the rest. Most of my peers think I'm bizarre for this.

hi nites i reckn your a yong fogy rosie

In email I don't use valedictions either, just my name at the end or a .sig. Written letters go "Dear Sir/Yours faithfully" or "Dear [name]/Yours".

Hmm, well showing my old-foginess I start with a "signature" saying who I am, website details etc. (Though this is automatically included) Then I use Dear (name) <comma> Dear Humphrey, Then the text - all properly written out and hopefully correctly spelt and punctuated. And I tail it with Regards, Blob (or whatever soubriquet that person knows me by) ........ What's more, I write SMS texts in much the same way !!!

(Nights) Actually most of my emails are no different from letters except in the greeting if I'm familiar with the person. This means capitals, punctuation and paragraphs. Well, why not? At my age you simply don't give a toss if people think you're bizarre. It's great.