'I really enjoy reading your newsletter' is enough thanks really - it makes my heart happy, and my fingers eager to type out the next newsletter.
But apparently a happy heart isn't useful for paying a mortgage, so if you want to send me actual cash, that is also amazing.
Sending me a tip is like buying a coffee, but less effort as you don't need to travel to my local high street.
Pay no attention to those pre-set amounts (that I can't control) - go to 'Other amount' and put however much you want.
Thank you!!