How to constraint email address

[Yordanos]

Hi all,

I have a question asking about email address. I want to constraint the input not to have an error. Is that possible to do that.

thank you

[mathieubossaert]

Hi @Yordanos

I think this discussion will help you

Email validator

You can use a regular string question with a constraint containing a suitable regex() to check for a valid email address. There's more about writing regex's here: https://docs.getodk.org/form-regex/ What does/not actually constitute a valid email is actual rather complicated [for more than you probably ever wanted to know, see https://www.regular-expressions.info/email.html], but a basic one may suffice in most cases; eg ^[A-Z0-9+_.-]+@[A-Z0-9.-]+$

[danbjoseph]

This is also a good explanation:

Formatos para direcciones e-mail o direcciones de viviendas

My Spanish is not so bueno, but I agree with Jorge that you probably don't want to have strict constraints here. This is especially true with email addresses because the email address specification is maddening. For me, the best way to validate an email is to send an email to that address with a link inside and see if someone clicks that link. The next best way, especially if you are offline, is to make sure there is no obvious typo. So what I check is at least one non-whitespace character, fo…