AutoModerator

AutoModerator is Reddit’s built-in moderation bot. Every subreddit gets it at no cost, and each moderator team decides what it does. The configuration lives on a wiki page inside the community itself, written in YAML, where every rule pairs a set of conditions with an action to take when they match. Once saved, those rules run against each new post and comment the moment it is submitted, around the clock, with no human in the loop.

Two properties explain most of what authors experience. It is local: a rule has effect only inside the community that wrote it, so what it does in one subreddit tells you nothing about the next. And it is evaluated per item, each submission tested against the state of the account at the instant it was posted. There is no central rulebook, and a subreddit’s configuration page is normally readable by its moderator team rather than by its members.

What it commonly filters

A handful of conditions account for most AutoModerator rules in the wild. Minimum account age and minimum karma are the classic pair, used to keep throwaway accounts out of a community’s threads. Beyond those, rules frequently match links against allowed or blocked domains, scan titles and bodies for banned phrases, and require a verified email or a minimum body length. The actions are just as varied. A rule can remove content outright, hold it for human review, report it to the moderation queue, post an automatic reply, or assign flair. Because each community writes its own configuration, an identical comment can publish cleanly in one subreddit and disappear instantly in the next.

The conditions fall into two families. Some describe the author: account age, karma, whether an email is verified, whether the account is an approved contributor. Others describe the submission: link domain, words in the title or body, length, flair, post type. One distinction among the actions matters: holding an item in the moderation queue is not removal, since a moderator can approve it later, which is why a post can be absent for hours and then quietly appear.

What none of this tells you is the numbers. The thresholds a subreddit sets, the phrases on its lists, the domains it treats as suspect, are decided privately and almost never published. Any figure quoted as a general Reddit rule is worth ignoring: assume every community has different settings, because it does.

Why a removal is often silent

A rule can be configured to explain itself. Many are not. When a removal is silent, nothing changes in the author’s own view. The post is still in their profile, still in the thread when they open it while signed in. Only everyone else’s view is different, because for the rest of the community the item never arrived. The symptom is absence rather than error: no votes, no replies, no notice, on something that looks healthy from the inside.

This is a default, not an oversight. A large subreddit may filter a great deal of automated content daily, and answering each removal would fill the community with bot comments. It would also publish the configuration by increments, which moderator teams avoid: a threshold that is known is a threshold that gets tested.

The consequence is that a silent removal carries almost no information about the content itself. It is a pattern match, not an opinion. A good comment can be caught by a rule aimed at something else, written years earlier for a problem that no longer exists.

What to do when a post disappears

Start by confirming what happened, because your own session will not tell you. Open the post, or your profile, in a private window where you are not signed in. Content visible while signed in and missing while signed out was removed. Content sitting there with no engagement was seen and ignored, which is a different problem.

Then establish the scope. One post missing from one community points at that community’s configuration. Everything missing everywhere points at something wider than one subreddit, which is more serious and worth diagnosing separately. Both layers, and how they fail differently, are set out in how Reddit decides what founders can post.

Then read what the community publishes. Sidebars, rule lists and pinned posts usually state the requirements moderators want known: standing to post, link policy, mandatory flair. Configurations tend to enforce the published rules, so those are the closest available reading of them. After that, ask. Modmail is the intended channel, and a short message asking which requirement a submission missed is unremarkable for a moderator to receive. Teams often answer, and can release an item held in the queue.

What is worth avoiding is the reflex. Resubmitting the same post repeatedly, or taking it to a list of other communities instead, is the shape of activity that both subreddit configurations and Reddit’s sitewide spam systems exist to catch. The instinctive response tends to cost more than the removal did.

For operators

When a new account’s post vanishes with no explanation, the cause is almost always an AutoModerator rule rather than a human moderator who read it and objected. Age and karma floors are precisely the gates a fresh account fails by definition, and many configurations remove silently, so the post still looks live from the author’s logged-in view while nobody else ever sees it. The failure is mechanical, and it is local: it reflects one community’s settings, not Reddit’s judgment of the account. That makes it a different problem from a Reddit shadowban, the sitewide version of the same silence, which hides an account everywhere at once. The durable answer to both is identical. An account with months of ordinary history stops tripping these gates for the simple reason that the gates were never aimed at it. Building that kind of history, patiently and without shortcuts, is what the guide to Reddit marketing for founders is about.

A community’s automated rules are best treated as part of the cost of entering it, paid in advance or not at all. Thresholds nobody will show you are cleared by an account present long enough for them not to apply, and that work does not compress. It is also why shortcuts underperform: an account bought off the shelf, or padded by karma farming, arrives with a record that does not match how it then behaves, and that mismatch is what the sitewide systems are tuned to notice. Hermenea agents work the other way round, spending time in a community on its own terms long before anything is asked of it.