In one survey, we hope the respondent to input their email address. In order to assure their email address are correct, we ask them to input email address twice. How can we verify those two input are the same? IF they are the same, go ahead; if not , a warning: the second email address is not the same as the first one.

Please see the image below:

You can do:

Q1. What is your e-mail? _____
_
Q2. You wrote: {Q1}. Is this correct?
- Yes
- No

If (No) Q3. Please enter the correct address

cheers Elo

A lot of questions in a short period of time.

You can use the validation field. In the second text question (Your email again) you enter the question code of the first text question (Your email). You can add a validation tip to inform users that E-Mailadress in both fields are not matching.

I agree with jelo's suggestion but I would use a multiple-short-text type question so the validation and tip are all in one place.

This would be helpful www.limesurvey-consulting.com/how-to-val...esses-at-limesurvey/

I wouldn't use additional regex checking to validate email structure.
There is no way to check every email.
elliot.land/validating-an-email-address

To minimize wrongly written emails another way might be to use scripts suggesting emails
E.g. github.com/mailcheck/mailcheck

BTW: I really starting to getting annoyed and demotivated posting on the forum. Flooding protection is nagging for 120sec pause. You cannot post three links in one post.

I really starting to getting annoyed and demotivated posting on the forum. Flooding protection is nagging for 120sec pause. You cannot post three links in one post.

Maybe ping Carsten direct - I doubt he'll see your concerns here.

tpartner wrote: I agree with jelo's suggestion but I would use a multiple-short-text type question so the validation and tip are all in one place.

I used this method. And

Question validation equation:
(is_empty(newemail_a1) or (regexMatch('/^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/', newemail_a1) and newemail_a1==newemail_a2))


Question validation tip: {if(is_empty(newemail_a1) and is_empty(newemail_a2), '',if(regexMatch('/^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/', newemail_a1) or regexMatch('/^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/', newemail_a2), if(newemail_a1==newemail_a2, '', "Email Addresses are not the same"), "Invalid Email Address"))}

It seems work. But I don't know exactly whether it will work or not? How do you think about it?

See jelo's comment about validating email addresses with a regex - www.limesurvey.org/forum/can-i-do-this-w...-are-the-same#134324