Review this email regex, please

[Tony Hicks]

^(([a-z0-9\.\-_]+)([a-z0-9]+)@([a-z0-9\-]+)(\.[a-z0-9\-]+){1,6})$

This email regex has passed all my emails, but is there any
inefficiencies or do you guys think it looks good to run?

The last bit, allowing the extension pattern to repeat 6 times may be
a littler generous but with the subdomains and tlds such as .co.uk, it
seems this should be fair.

What do you guys think?

Like I said, it works, but this is gonna be used on a lot of my sites
pages, and I don't want to be inhibiting users from valid activity.

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[Ben Doom]

This allows ben..doom@..., which is not legal.  Somewhere,
aroudn here, we've got a really good email regex.  I'll see if I can
find my copy in a bit....
Meanwhile, I know it's in the archives.

--Ben

Tony Hicks wrote:

> ^(([a-z0-9\.\-_]+)([a-z0-9]+)@([a-z0-9\-]+)(\.[a-z0-9\-]+){1,6})$
>
> This email regex has passed all my emails, but is there any
> inefficiencies or do you guys think it looks good to run?
>
> The last bit, allowing the extension pattern to repeat 6 times may be
> a littler generous but with the subdomains and tlds such as .co.uk, it
> seems this should be fair.
>
> What do you guys think?
>
> Like I said, it works, but this is gonna be used on a lot of my sites
> pages, and I don't want to be inhibiting users from valid activity.
>
>

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[Tony Hicks]

Ben,

Thanks for the reply.. Yeah I'd be glad to see what's been come up with before.

This appears to work though

^(((([a-z0-9])+([\.\_][a-z0-9]){0,1})+)+@([a-z0-9\-]+)(\.[a-z0-9\-]+){1,5})$

what do you think, if you don't mind?

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[Tony Hicks]

^(((([a-z0-9])+([\.\_][a-z0-9]){0,1})+)+@([a-z0-9\-]+)(\.[a-z0-9\-]+){1,6})$

sorry about that

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[Ben Doom]

^[a-zA-Z]([.]?([[:alnum:]_-]+)*)?@([[:alnum:]\-_]+\.)+[a-zA-Z]{2,4}$

is what I'm seeing as the current version on this list.  It needs a
little adapting for .museum addresses, if you want to include those
(just change the {2,4} to {2,6}).

HTH

--Ben

Tony Hicks wrote:
> ^(((([a-z0-9])+([\.\_][a-z0-9]){0,1})+)+@([a-z0-9\-]+)(\.[a-z0-9\-]+){1,6})$
>
> sorry about that
>
>

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