I agree with the communication part of all this. If the email was not blatantly hurtful....then the only way to come to terms with what you are feeling is to get communicating about it! How else do we learn to work through our emotions and feelings about what others have said, that we may have taken the wrong way than to communicate about it??
Misunderstandings happen all the time with the written word. There are so many variables that come into play and without seeing the facial expressions, body language and tone of voice, it's sometimes hard to know exactly what the person is trying to convey and why.
Learning to process through our emotions can be tricky. I believe that communication helps in that regard, unless the communication from the other person is blatantly hurtful.
(((((((((((((((((((((( fuzzywuzzybearzy ))))))))))))))))))))))))))

sabby