The spell checker was integrated into the copy I downloaded. All I had to do was mis-spell a word in a box such as the one I'm typing in at the moment, and it would highlight the wrongly spelled word with a red underline.
Select Tools> Options> General> Check my spelling as I type.
You shouldn't need any add-ons of plug-ins.
I'm afraid I don't know about the integrated email button, I never bothered with one before, so I don't have one now.
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