Thank you Nadya.

>I think, it may depend on the purpose of this e-mail. Say, when I send my resumes, if I know the person's name, I always start with Dear Mr. John Adams
>If I don't know person's name, I write Dear Sir/Madam,
>
>I think, this would be appropriate for an e-mail. If it would be a mailed letter, it could be started from your phrase. However, I'm not an expert (obviously) and just stated this as I see it.
>
>>I have to send e-mails.
>>
>>What would be a good way to start that message.
>>
>>"To whom it may concern," is one.
>>
>>If the name of the recipient is John Doe "Mr. Doe," could be another
>>
>>What would you suggest as alternatives?