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Mo Validation Mo Problems (thelemmy.club)
submitted 7 months ago* (last edited 7 months ago) by to c/programmer_humor@programming.dev
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[–] 220 points 7 months ago* (8 children)

Jokes aside, I have been blocked many times by overzealous email validation. Yes, my email has a plus sign in it. This is allowed under RFC5322, so deal with it. It is better to have no validation at all than incorrect validation.

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  • [–] 207 points 7 months ago* (4 children)

    A plus sign? That's nothing, LOL

    Quote:

    If you disagree, or have any other comments, feel free to email me at

    '*+-/=?^_`{|}~#$@[IPv6:2602:f977:800:0:e276:63ff:fe72:3900]

    -- if your mail client lets you, that is.

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  • [–] 4 points 7 months ago (1 child)

    I dont know if it's just me, but this comment is breaking the rendering of Voyager

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  • [–] 3 points 7 months ago

    I needed to use a code block for that address as several apps had a problem when I tested escaping the back ticks in the address for the inline code. Not sure if you mean that as it renders in it's own line or if anything else is broken

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  • [–] 87 points 7 months ago (2 children)

    The best email validation is just sending an email to whatever provided by the user. If user receives an email and validates it, than its validated.

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  • [–] 1 point 7 months ago (2 children)

    Email validation for a form should at most look for

    • at least one character
    • followed by @
    • followed by at least one character
    • followed by .
    • followed by at least two characters

    Sending an email can take a few minutes. Form validation is instant.

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  • [–] 5 points 7 months ago

    Which would still not be perfect because "foo@bar", "foo@[123.123.123.123]" and "💩 @[IPv6 :::1]" are all technically valid email addresses.

    It looks like the only validation that doesn't block something valid pretty much would start and end at "It has at least one @ symbol, and something on both sides".

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  • [–] 63 points 7 months ago (1 child)

    The worst sites are the ones that let you sign up with an unusual address but not log in. The worst I‘ve seen was some ticket system that rejected dfyx+theirdomain@mydomain after I clicked the link in their confirmation email.

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  • [–] 20 points 7 months ago (1 child)

    There's an aspect of my surname which is somewhat unusual (at least in my country). As a result I occasionally get form validation errors when entering it. Sometimes those errors are extremely inscrutable. Sometimes a form validates but something elsewhere makes unvalidated assumptions about names which then breaks in completely unpredictable names...

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  • [–] 18 points 7 months ago (1 child)

    Does it fall into one of the falsehoods programmers believe about names? https://www.kalzumeus.com/2010/06/17/falsehoods-programmers-believe-about-names/

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  • [–] 6 points 7 months ago (1 child)

    Actually no. In fact, I think most people who thought for a minute would realise names like mine exist, it's just that sometimes people working systems don't think for a minute ;)

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  • [–] 34 points 7 months ago (2 children)

    Even worse is when they strip the plus sign out after the fact and then you can't log in anymore because you didn't realize that's what has happened.

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  • [–] 11 points 7 months ago

    Yees this has happened to me before but with passwords. They have some length limit that they clamp to so you can't login after registering and I have to do a password reset right after signing up. Happened multiple times to me.

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  • [–] 15 points 7 months ago

    That was my best customer support interaction ever. Company did not let me register with a "new" TLD email address, as "this is not a valid email address". I wrote them from that email address. They respondend to that email address with "this is not a valid address". I wrote back "how are we writing, then?" and never heard back 😂

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  • [–] 14 points 7 months ago (2 children)

    Not sure if you also do aliases as well but I’ve seen an increase in websites flagging providers like addy.io as well. Extremely annoying that so many websites think they are so important that they refuse an alias.

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  • [–] 10 points 7 months ago

    Same although for a totally different reason. There are some services that really don't like gtlds and they will say your address is invalid if it doesn't end in .com, .net, or .org...all my serious domains are gtld...so some services have emails on meme domains because the only domains I have with traditional tlds are memes

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