Hi @dimitar,
Thanks for reaching out to the Auth0 Community!
I understand that you’d like to create users without sending them a verification email.
Looking at your curl command, it appears that you are making a call to the Authentication API /dbconnections/signup endpoint which does not have any capability to set the email_verified property.
Instead, I recommend that you use the Management API Create a User endpoint to create your users with "email_verified": true.
After doing so, you’ll be able to create new users without sending them a verification email.
Please let me know if you have any further questions. I’d be happy to help.
Thank you.