i need to enable auto forwarding to my project email but i cant receive the verification email from gmail
What exact steps have you taken to do this? Also, what are you using? So you want an email you receive in gmail to auto send an email to a project to create a task?
You would need to add all email address's used to the Accepted list (Right Click Project, Email Tasks To This Project) that includes the address the verification email would come from. Adding *gmail.com to the list should help with this.