Yes, Email is still relevant (pun intended).
No, it's still the king! With social networks being obsolete and RSS becoming more rare, it's time to subscribe to more mailing-lists again. Thanks to modern mail-services, there is a perfect separation of different types of mails, so they won't bother me on my phone, but still getting every bit of free, uncensored information.
Update: Here we go. You can now subscribe to this Blog via Mail:
Update: Here we go. You can now subscribe to this Blog via Mail: