(Just in case you are dying to send fan mail/love letters/hate mail etc.)

This is correct as of October 2021

Email

My Warwick email will be in use until summer 2022:

It is my first initial dot my surname at the domain warwick.ac.uk.

(It doesn't matter if the b or the s are capitalised; but all other letters should be lower case.)

I.e., if you read it out loud, you might say something like:

"Bee Dot Sewell At Warwick Dot Ay Cee Dot You Kay."

(You can hear Google translate saying this expression here.)

Real mail

Old-fashioned correspondence can be sent to me at Rényi:

POB 127, H-1364, Budapest, Hungary