Write a concise e-mail to , or use Signal. I tend to react quickly. Please do not use any social media, including WhatsApp (which I don't use anymore), LinkedIn (which I barely use at all), and Microsoft Teams (which I use only for online meetings).
Due to my retirement, I am not offering positions for students or postdocs anymore.
PLEASE READ ABOUT MY MAIL FILTERS
Note that all mail containing executables and archives is automatically filtered and will not reach my mbox. I use rather strict spam filters. If you expect a response from me, but you're not getting it, your initial mail probably didn't pass my filters. Furthermore, if you have stuff to sell, don't bother e-mailing me, as I will not respond.