Auto action usecase

Hello and best wishes for the new year.

I need to set a permanent cookie after user registration for some reason. This is done, the cookie is being created fine.

Now we need to check (also after user registration) if the cookie exists and if it does to send an e-mail to a specific email account, that will inform that a user that already has the cookie on his device registered again.

So we need an auto action that....

will be triggered after user registration, will check (php) if the cookie exists and if it exists, will send the email that has to include the registered user username.

Is it possible?
What auto action will that be to combine code to check for the cookie and mail to send the e-mail?

Thank you in advance.

Yes, that's possible. Checking the cookie and the email should just be a single auto action. You'd check the cookie in a Condition and the email would just be an Email action. You'd use the onAfterUserRegistration trigger. Example as follows.

Global
Trigger: onAfterUserRegistration
Type: Email
User: Automatic
Access: Everybody
Conditions
Field: Custom > Value
Custom Value: [cookie_COOKIE_NAME_HERE]
Operator: Not Empty
Action
To: YOUR_EMAIL_ADDRESS_HERE
Subject: Cookie Registration Detected!
Body:
Replace COOKIE_NAME_HERE with the name of your cookie. Replace YOUR_EMAIL_ADDRESS_HERE with the email address you want to send this to. It should send the username of the newly registered user.

Thank you Krileon.
I will give it a try and will be back if any issues.
Best wishes for the new year!