Ask HN: The Rise of the Newsletter?

What do you think will happen to Newsletters in the next few years? I have the funny feeling, that they will gain more traction again based on the fact that they are big time savers for their readers.

Or do you think that they are outdated and will be replaced by some other new things? Have you recently subscribed to new ones or unsubscribed to old ones?

It is a very long term game to build a meaningful list and I'm trying to figure out if it is worth pursuing.