Below you find my Email addresses and XMPP (Jabber) address. You can use both to contact me. Most of the time I prefer asynchronous communication. Therefore I recommend to send an Email unless it is really time critical.
email@example.com, if you want to talk about Free Software and my work at FSFE.
firstname.lastname@example.org, if you want to talk about Nextcloud.
email@example.com, for everything else.
Real-Time Chat (XMPP/Jabber)
firstname.lastname@example.org, if it is not time critical please consider writing a Email instead.
Note: I get a lot of XMPP spam. If you add me as a contact, please add a short personal note about you and your request. Otherwise the chance is high that I will miss your request.