Really good and important question.

Are there any emails to confirm that or is it just some kind of dumb meme?

Nothing to outright confirm it, but multiple emails give strong evidence he was pulling the strings. Off the top of my head:

• 1. Brexit. J.E and another were celebrating the fact Brexit happened I don't know how i feel about this because this is also what every critic said of brexit and i see no reason why britain leaving the EU would mean it might go to war with EU countries. It's totally not in Britains interest to do that, we probably won't be expanding our borders for the next 2000 years.

Therefore the Brexit one makes me think that some of the emails were him joking around / planting red herrings, as if he expected to be caught and to have people be reading through them one day. Similarly:

• 2. Joking about Pizzagate - At first I thought this was definitely a bit of a red herring, i.e that J.E was making fun of people for a stupid conspriacy theory. But the vast usage of terms like Pizza + Cheese Pizza throughout the emails pre-dates the Pizzagate incident, and really does seem to be used as codewords for you-know-what.
• 3. Important one: He knows the guy who set up 4Chan. In fact, 4Chan was set up right after J.E had dinner with the founder.
• 4. J.E was confirmed by the CIA to have trained as a spy under a previous Israeli PM, Ehad Olmert. Netanyahu is currently trying to paint J.E's connection to Ehad as proof that J.E is a leftist - this shows that J.E's allies play around with the culture war stuff, just in case it wasn't already obvious (e.g from Donald T and Elon M being friends with J.E)
• 5. Oh also J.E mentioned Steve Bannon and Boris Johnson in the same email mocking them for thinking they're in control of a movement of their own (right wing populism), and insinuating that they're pawns to him and his pals.

Epstein wasn't doing this by himself, he just handles the blackmail part of it. If you want to catch the people who've been manipulating culture war, we need to get the people he emailed about all these things.

Notes on these:

1a) In retrospective, Brexit was complete "kayfabe" because it actually lead to a HUGE unmanaged increase in immigration (under the absolutely vile and despotic Boris Johnson). From what everyone says it also damaged the economy, as was anticipated.

1b) His good pal PETER MENDELSOHN, the #1 Jeffrey Epstein implicatee in the UK, is going to be tried because the emails show that he was leaking a shit ton of secret information from our country, for about... 3 decades? All so that his friends could profit from betting against the UK on the stock market.

1c) Therefore it totally tracks that J.E or his friends would have encouraged Brexit, purely for the economic damage if nothing else.

3a) From what I gather about 4Chan and related sites is that what we normies refer to as 4Chan is actually a wider collection of forums older than 4Chan - 4Chan is like one instance of the threadiverse. (I might be wrong about this - correct me below).

3b) I've heard a surprising amount of times people refer to 4Chan as the "woke" chan board. Don't know if there's anything to that but I think the old-timers on those forums basically didn't trust 4Chan, so there might have long been a sense that it was a honeypot of sorts.