this post was submitted on 09 Feb 2026
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You Should Know

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YSK - for all the things that can make your life easier!

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@youshouldknow YSK that you can post to Lemmy from Mastodon, and Mastodon users can interact in Lemmy threads. This is a Mastodon account.

Seems like there's a new wave of Lemmy users, thought they may find that interesting! It can also work with other Fediverse software as well. It's all interconnectable. It's not perfect and there's some quirks due to Lemmy being a forum and Mastodon being a microblog. But you can ping Mastodon users in threads, and they can reply seamlessly.

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[–] paequ2@lemmy.today 64 points 5 days ago (1 children)

Will this reply show up in Mastodon??

[–] paequ2@lemmy.today 44 points 5 days ago (1 children)
[–] Patnou@lemmy.world 15 points 5 days ago (3 children)

Forgive my ignorance but what is a Mastodon? I only ever heard it to be used as a animal

[–] AnyOldName3@lemmy.world 35 points 5 days ago

It's a federated Twitter alternative. It's existed for a while - the initial release was in 2016, but obviously with all the Musk-related nonsense in the past few years, it's grown a lot.

[–] Kolanaki@pawb.social 47 points 5 days ago (1 children)

I just wish the tags used on Mastodon didn't end up in the body text when they end up on Lemmy. It can add a helluva lot of clutter when they add a thousand of those fuckers.

[–] RickyRigatoni@piefed.social 36 points 5 days ago (1 children)

I would also like it if their posts didn't start with tagging everyone in the thread.

[–] schnurrito@discuss.tchncs.de 5 points 5 days ago

It always looks funny tho. :D

[–] corsicanguppy@lemmy.ca 27 points 5 days ago (2 children)

I've tried explaining the fed to my friends and family like "it's like insta and FB and xitter and reddit all got to talk to one another and there's different organizations like email has". I'm not sure they get it much better.

[–] thevoidzero@lemmy.world 16 points 5 days ago (1 children)

I just explain but starting how you can email gmail from Outlook and such ( familiar concept). Then tell them you could email a Facebook account using username@facebook.com (this shows they were open to it at some point), that it was a default state of things because they wanted you connected. But then they realized they can make you sign up to their own website and make more money, so now we need account for everything. But imagine you didn't, you could access different contents in the UI/format you want. You don't need to share screenshots of different social media (shows why it's useful), you could just follow different people from different websites.

So far this explanation has worked. I haven't converted anyone, but they understand. Sometimes they try to install and see, then say "the things I want are not here" because we don't have all the niche

[–] rumba@lemmy.zip 7 points 5 days ago

I've converted no one. But I get the most tempted looks when I say: there are no ads, and when you search for anime, noone is adding that to their secret database of your likes

[–] rumba@lemmy.zip 4 points 5 days ago

Especially when you try to expliain that you can send stuff from mastodon to lemmy, but not lemmy to mastodon, unless it's just tagging a user, and then it's only on certain platforms.

We all play together, but we don't all play the same way and it's not always nice.

[–] squirrel@piefed.kobel.fyi 22 points 5 days ago (1 children)

YSK that the first line will be the title of your post. It looks better on Lemmy/PieFed if you mention the community in the second line or further down.

[–] acockworkorange@mander.xyz 2 points 4 days ago

Better yet, leave the mentions and hash tags at the bottom of the text. Declutter my reading, please.

[–] HumbleExaggeration@feddit.org 16 points 5 days ago (3 children)

Ok, so Mastodon can post to lemmy, does this also work the other way around? And could I follow persons on mastodon somehow woth my Lemmy account? Does this show up as a small community?

I think the way Lemmy / PieFed are set up you can't inherently "follow" someone like a feed. PieFed being an article posting site (?) Like Lemmy they support each other right away. So posts on that platform while written in another programming language, still mesh and show.

[–] Quill7513@slrpnk.net 3 points 4 days ago

not with lemmy, but with mbin

Example response from PieFed

[–] dnub@piefed.social 13 points 5 days ago (1 children)

You should give an explanation on how to do it

[–] bdonvr@mastodon.sdf.org 11 points 5 days ago (5 children)

@dnub On Mastodon simply tag the community like it's a user. For example (at)youshouldknow(at)lemmy.world.

On Lemmy you can't post to Mastodon really but you can mention a Mastodon user and they will get a notification. You can also message them.

[–] Thekingoflorda@lemmy.world 5 points 5 days ago

It does show up on lemmy, but sometimes it takes a while afaik.

[–] teawrecks@sopuli.xyz 2 points 5 days ago

Does this mean lemmy users can't have the same name as communities? I'd just never noticed.

[–] Toldry@lemmy.world 1 points 4 days ago (2 children)

Gonna test this.

Hey @wolfe@furry.engineer, did you get a notification?

[–] wolfe@furry.engineer 2 points 4 days ago

@Toldry yes, but the @ isn't a link lol

[–] bdonvr@mastodon.sdf.org 2 points 4 days ago

@Toldry @wolfe I see this on Mastodon so it should.

[–] architectonas@lemmy.world 9 points 5 days ago
[–] Grandwolf319@sh.itjust.works 7 points 4 days ago (1 children)

But can you post from lemmy to Mastodon?

I’m not asking if it would make sense, I just feel left out cause of the one sided posting ability

[–] harcesz@szmer.info 1 points 4 days ago

You can follow lemmy users and communities with a mastodon account.

[–] SabinStargem@lemmy.today 4 points 4 days ago

Hopefully, we can see cross-service APIs and federation become common. Having Matrix, Lemmy, Mastodon, and other platforms being able to talk with each other would be terrific. Especially if we can import/export our profiles at will, to migrate across services if we want to experiment or escape an enshitffied place.

[–] Evil_Incarnate@sopuli.xyz 8 points 5 days ago (1 children)

Guess I'm on Mastodon now....

[–] bamboo@lemmy.blahaj.zone 5 points 5 days ago

Look, you're famous!

Yeah, that's the wonder of the Fediverse. One network that can be interacted with by many tools and platforms.

[–] Innerworld@lemmy.world 5 points 5 days ago

The beauty of interoperability. Thank you ActivityPub.

[–] enbiousenvy@lemmy.blahaj.zone 3 points 5 days ago* (last edited 4 days ago)

I know mastodon posts/replies in lemmy when I see it starts the post by mentioning the community or author of the post haha.

[–] Ascendor@discuss.tchncs.de 2 points 5 days ago

Can you post new threads from Mastodon, or only comment to existing threads?

on piefed you can add tags to a post and they'll show up in mastodon

[–] neuracnu@lemmy.blahaj.zone 2 points 5 days ago (1 children)

Kinda sorta.

The specific mastadon instance I'm on (mefi.social) does show the existence of lemmy communities and users, but it doesn't import their posts or replies. mastodon.social seems and some other larger implementations seem to work fine though. I'm not sure if this is a configuration issue or what.

[–] irelephant@lemmy.dbzer0.com 3 points 5 days ago (1 children)

Information only gets sent to an instance if someone is following whatever created it.

If you follow a community as if it's a user the posts will federate to your instance.

[–] neuracnu@lemmy.blahaj.zone 3 points 5 days ago* (last edited 5 days ago) (2 children)

I did try that (following the community), but the mastodon account's "request to follow" has been stuck in "awaiting approval" status. I run the Lemmy community that I'm trying to follow with my Mastodon account, but I don't see how or where to approve these follow requests.

Are those requests gated by the mastodon admin perhaps?

[–] irelephant@lemmy.dbzer0.com 3 points 5 days ago (1 children)

Sometimes Lemmy doesn't send a response saying that the follow worked

[–] neuracnu@lemmy.blahaj.zone 2 points 5 days ago

If the mastodon instance never receives acknowledgement that the follow-request was approved, it's probably not going to start fetching those messages. I've tried un-following and re-following; it still doesn't work.

As I said intially, I think that qualifies the integration as only kinda-sorta working.

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[–] CubitOom 1 points 5 days ago (1 children)
[–] elvith@feddit.org 2 points 5 days ago (1 children)

IIRC you must be following the community with your Mastodon Account to be able to post there. At least that was the problem, when I tried it the last time.

[–] CubitOom 1 points 4 days ago (1 children)

I tried again, this time after making sure to follow the community, but it still failed.

https://social.linux.pizza/@CubitOom/116043519425870125

[–] elvith@feddit.org 2 points 4 days ago

Although I cannot remember how to do it "correctly" I have a suspicion whats wrong with your post:

Mastodon just has a "text" for the post, some mentions and maybe media attached to it.

Lemmy also features a post title and an URL. IIRC the first paragraph of your post get converted to the title, the remainder is the post body (maybe you need to put the desired link second?!). I guess your text in the first paragraph is too long to fit in the title and the post is discarded.

Try something like this:

ICE Tucson, AZ - 2/7/26

Fascist paramilitary invaders deployed...

Source: reddit.com/...
[–] Postmortal_Pop@lemmy.world 1 points 5 days ago

Not great with this fediverse stuff, i made a world account when i came from reddit and now most of my communities are dead. Where should I move to?

[–] AntiBullyRanger@ani.social 1 points 5 days ago* (last edited 5 days ago)

You can also create a community with false subcommunties and ban whoever you want!

Really funny exploit!