Happy to recommend the service regardless, but perhaps it's a nice idea to implement a simple referral system. This would reward existing users and drive growth.
Existing users would find a personalized link to Kagi on their settings page (e.g. https://kagi.com/?ref=R4ND0M, URL parameter could be appended to any Kagi link or entered manually when signing up). For every user that signs up and subscribes using the referral code, the user tied to the referral code could get a discount on their monthly subscription fee that month.