Anyone else get a similar email?
You have two options this year.
A) Renew the maintenance and support on your existing “Classic” licenses at a cost of $ each
(Click that link if you simply want to renew your support online)
You are certainly welcome to maintain your perpetual "Classic” license, but this is likely the last year that option will be available.
OR… (and my recommendation)
B) Convert to our new [SketchUp Pro] annual subscription at a discounted rate of just $ for the first year.