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Check e-mail address?

Posted on 2004-04-22
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Last Modified: 2010-05-02
Hi all
Does anyone has a function/sub in VB to check an email address is good or bad?

Thanks.
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Question by:melodiesoflife
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6 Comments
 
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Sethi earned 100 total points
ID: 10887757
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Expert Comment

by:Xentor_
ID: 10887758
If you're looking to verify if it's in the traditional user@dom.ain format, that's easy enough... But if you want to know if it's an actual working address, you'll have to actually send something to it.

To verify the format, I would do an Instr search to find the @, iterate through the part before it to check for alphanumeric only, then split the other part by periods (.) and check for alphanumerics and dashes surrounded by alphanumerics.
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Expert Comment

by:Xentor_
ID: 10887769
Hmm, looking at Sethi's comment, it's nice to be proven wrong.
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Expert Comment

by:RanjeetRain
ID: 10887841
YOu have to correct the sysntaxes:

function checkemail(strEmail) as boolean
    If Len(strEMail) < 5 Exit function                              ' Minimum length check
    If InStr(strMail, "@", 1) = 1 Exit function                  ' Must contain @ symbol
    If InStr(strMail, ".", 1) = 1 Exit function                    ' Must contain . symbol

    checkemail = true
end function
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Author Comment

by:melodiesoflife
ID: 10895742
Thank all.

I have wrote it for myself
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