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Your LimeSurvey version: [url=https://localhost/survey/index.php/admin/emailtemplates/sa/index/surveyid/472442#modalSystemInformation]Versión 5.2.14+220214[/url]
Own server or LimeSurvey hosting: localhost
Survey theme/template: default
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I have a survey configured as anonymous because I still don't know who is going to answer it and in the form I ask for the email.

How can I send the confirmation email to that data that is captured in the field?

With token ?
I think it work out of the box using confirmation email.

LimeSurvey put completed or not on token table.

Without token table : www.limesurvey.org/manual/Notifications_..._Notifications_Email

But, technically, your survey is not really anonymous if you ask email inside …

I do not see a field for recipients in the email templates....

tammo wrote:

I do not see a field for recipients in the email templates....
 

No : it was in Notification tab for «admin notification» email, and TOKEN:EMAIL for  confirmation.
 

Yes, right, I had not used this for some time...

@fertovar: When the question that asks for the email address has the question code "email" you can put {email} in one of the fields on the notifications page of your survey.