# What does DM mean?

Canonical: https://postmesh.app/glossary/dm

By PostMesh team. Published 2026-10-31; updated 2026-10-31.

DM stands for Direct message. DM stands for direct message: a private message sent to one person or a small group inside a social app, instead of a public post or comment. It works as a noun (check your DMs) and as a verb (DM me).

## What DM means

DM is short for direct message. It's a private message you send to one person, or to a small group, inside a social app. Only the people in that conversation can read it. A post, a comment or a reply sits in public; a DM doesn't. Instagram's help center puts it plainly: messages don't show up in feed, search or your profile.

You'll see the word used three ways. As a noun, "I sent you a DM." As a plural, "check your DMs," which means look in your message inbox. As a verb, "DM me," which means send me a private message. Merriam-Webster lists both the noun and the verb, with the verb forms DMed, DMing and DMs. Lowercase dm means the same thing in a casual message.

The word itself is neutral. It isn't flirty, urgent or formal on its own; the words around it set the tone. "DM us your order number" from a shop is customer service. "Are your DMs open?" from a stranger late at night is probably something else.

> Outside social media, DM has unrelated meanings. Merriam-Webster also lists it as an abbreviation for the deutsche mark, and lowercase dm for decimeter. Context makes it obvious which one you're reading.

## Where DM comes from

Merriam-Webster gives the etymology simply as direct message and dates the first known use of DM, in the social media sense, to 2007. X, the service formerly called Twitter, still names the feature Direct Messages in its help center and calls DMs the private side of the platform. Exactly who first shortened the phrase to two letters isn't well documented.

The phrase slide into the DMs came a few years later. Know Your Meme finds its earliest examples online in November 2013, around the time Instagram added direct messaging, which its timeline places in December 2013. A hip hop single by M-Boy titled Slide Into Your DMs came out on January 8, 2014, and Know Your Meme says the phrase jumped in popularity that same month.

- 2007: First known use of DM as a noun for a private social media message, per Merriam-Webster
- Nov 2013: Earliest known online uses of slide into your DMs, per Know Your Meme
- Dec 2013: Instagram introduces direct messaging, per Know Your Meme's timeline
- Jan 2014: M-Boy releases the single Slide Into Your DMs and the phrase spikes

*Dates from Merriam-Webster's DM entry and Know Your Meme's Slide Into Your DMs page.*

## How DMs work on each network

Every major app has DMs, but each one decides differently who can message whom. That decision matters more than anything else, because it controls whether your message lands in someone's main inbox or in a side folder they may never open.

| Network | What the app calls it | Who reaches your main inbox | Where other messages go |
| --- | --- | --- | --- |
| Instagram | Messages and chats | People you follow | Your Message Requests folder, or nowhere if you turn requests off |
| Facebook | Messenger | People you're connected with | Message requests, which may be deleted after 6 months unanswered |
| X | Direct Messages | People you follow, or anyone you've messaged before | Requests, but only if you allow messages from everyone or from Verified users |
| LinkedIn | Messaging and InMail | Your connections | InMail from Premium members, unless you've switched InMail off |

### Instagram

Instagram's help page says that when you message someone who doesn't follow you and isn't already connected to you, your message goes as a message request and can only contain text. You can't send photos, videos or voice notes until they accept. On their side, the request waits in the Message Requests folder and only moves to Chats once accepted. Messages from people they follow skip that step. A separate setting, Who can add you to groups, lets you pick Everyone on Instagram or Only people you follow on Instagram.

### Facebook Messenger

Meta's Messenger help page says that if someone you aren't connected with on Facebook messages you, it arrives as a message request. You can reply, block or delete. Delete it and you can't see that message again, and requests left unanswered for more than 6 months may be deleted automatically.

### X

On X you can message anyone who follows you. Someone you don't follow can reach you only if you've opted in to messages from everyone, if they're Verified and you've opted in to messages from Verified users, or if you messaged them first. Group conversations hold up to 256 people. X filters lower-quality requests into a section at the bottom of the Requests tab without notifying you, hides media in a request until you choose View media, and says the sender won't know you've seen a request until you accept it.

### LinkedIn

LinkedIn's help center says a free account can only message its connections. To reach someone outside your network you need InMail, a Premium feature, and you can't InMail a member who has turned InMail off in their message preferences. Premium Career includes 5 InMail credits a month and Premium Business includes 15, and LinkedIn credits one back when the recipient responds within 90 days.

**DM**
- Private to the people in the chat
- Not shown in feed, search or profile
- From strangers, often lands in Requests first

**Comment or reply**
- Public under a post
- Anyone who sees the post can read it
- Counts toward the post's visible activity

**Post**
- Public on your profile and in feeds
- Reaches followers and sometimes strangers
- Can be shared, searched and recommended

*Where a message lives decides who can see it.*

## What message requests are and how to manage them

A message request is a DM from someone the app doesn't consider a connection yet. The app holds it apart from your main inbox so you can decide whether to start the conversation. It's the reason a brand or a friend-of-a-friend can say "I DMed you" and you never saw it: the message is sitting in Requests.

On Instagram on the web, the controls live in Settings. Instagram's steps: click More in the bottom left, then Settings, then Messages and story replies below How others can interact with you, then Message controls. There you choose whether requests go to your Message Requests folder or whether to receive them at all. On X, the matching switch sits under Settings and privacy, then Privacy and safety, then Direct Messages. The iOS app labels it Allow messages requests from everyone, while Android and x.com call it Receive messages from anyone.

Instagram on the web: More › Settings › Messages and story replies › Message controls

*From Instagram's Manage message requests help page (computer steps).*

## What "slide into the DMs" means

To slide into someone's DMs is to send them a private message out of the blue, usually because you're interested in them, and ideally in a smooth, low-key way. The slide is the point: you're not commenting where everyone can watch, you're stepping into their inbox. Know Your Meme describes how the phrase became a running joke, often attached to clips of people doing something clumsy.

These days people also use it loosely for any cold outreach. A creator might say a brand slid into their DMs with a sponsorship offer, or a job seeker might slide into a recruiter's DMs. The romantic sense is still the default, so read the context.

## How people use DM in posts, comments and bios

On Instagram and TikTok, DM often shows up in bios and captions as a call to action, steering serious questions out of the public comments. On X it's common in replies when a thread gets personal. LinkedIn's own name for the feature is Messaging, so you'll often see "message me" there instead. Here are a few illustrative messages:

- "Prices are in my DMs, ask away."
- "DM me your address and I'll mail it Monday."
- "Check your DMs, sent you the link."
- "My DMs are open if anyone needs to talk."
- "Not me sliding into a stranger's DMs to ask where they got that lamp."
- "We just sent you a DM about your order, can you take a look?"

A bio that says DM for collabs works best next to a [handle](/glossary/handle) that's easy to search and a [link in bio](/glossary/link-in-bio) for anyone who would rather email. Creators who want to talk to many followers at once, rather than one at a time, use an Instagram [broadcast channel](/glossary/broadcast-channel), and anyone who wants a smaller private audience for stories uses [Close Friends](/glossary/close-friends).

## How to reply when someone DMs you

**Who sent the DM?**
- A friend or someone you follow → It's already in your main inbox. Reply when you're ready.
- A stranger with a real question → Accept the request, answer, and move to email if it turns into business.
- A stranger you'd rather not talk to → Leave it in Requests or delete it. No reply is a reply.
- Spam, a scam or harassment → Block and report from inside the conversation.

You don't owe anyone a reply. On X, a request sender can't tell you've read it until you accept, so you can look before deciding. On Instagram, accepting lets the sender add photos and voice notes, which is worth remembering before you tap Accept on someone you don't know. If a stranger asks for a login code, password or payment in a DM, stop there and don't send it. If you need help from Instagram itself, use the routes in our guide to [contacting Instagram support](/blog/how-to-contact-instagram-support) rather than an account that messaged you.

## When not to use DM

- Don't make "DM for price" the only way to learn a price. Many people won't ask, and a clear answer in the caption saves everyone time.
- Don't send the same cold DM to dozens of people. It reads as spam, and X, for one, filters requests it judges low quality out of view.
- Don't follow up again and again after no answer. One message is enough.
- On a brand account aimed at a broad audience, "send us a message" is clearer than "DM us" for people who don't use the slang.
- Don't move a sensitive or legal conversation into DMs when email or a support form keeps a better record.

If your business runs on DMs, keep the public side tidy too. A full [bio](/glossary/bio), pinned answers to common questions and posts that go out on a steady schedule mean fewer repeat messages. PostMesh can schedule those posts to several networks at once, though it doesn't read or send DMs, as the [Instagram page](/platform/instagram) notes.

## DM, PM, chat and inbox: similar words

Some people write PM, for private message, instead of DM. It means the same thing. Chat is what Instagram calls an open conversation, Messages is the tab name on X, and inbox is the general word for where all of them collect. Related shorthand you'll see near a DM includes [HMU](/glossary/hmu), hit me up, and [WYD](/glossary/wyd), what you doing, both common openers in a private chat.

## Questions

### What does DM mean in a text or comment?

It means direct message. "DM me" asks you to continue the conversation privately in the app's messages instead of in public comments.

### What does "check your DMs" mean?

The person sent you a private message and wants you to look. If you don't see it, check your message requests, since messages from people you don't follow often land there.

### What does it mean when someone slides into your DMs?

They messaged you privately without being invited, usually because they're interested in you. It can also mean any cold outreach, like a brand pitching a creator.

### Is a DM the same as a PM?

Yes. PM stands for private message and means the same thing as DM.

### Can I DM someone on Instagram who doesn't follow me?

Yes. Instagram sends it as a message request, and it can only contain text until they accept. Photos, videos and voice notes become available after that.

### Does someone on X know if I read their message request?

No. X says the sender won't know you've seen a request until you accept it.

### What does "DMs open" mean?

The person is inviting private messages, often from people they don't know. It can be an offer of help, a call for business enquiries, or a hint that they're open to flirting.

## Related terms

- [HMU](https://postmesh.app/glossary/hmu)

- [Close Friends](https://postmesh.app/glossary/close-friends)

- [Broadcast channel](https://postmesh.app/glossary/broadcast-channel)

- [WYD](https://postmesh.app/glossary/wyd)

- [Mutuals](https://postmesh.app/glossary/mutuals)

- [Handle](https://postmesh.app/glossary/handle)

## Sources

- [Merriam-Webster: DM](https://www.merriam-webster.com/dictionary/DM)

- [Know Your Meme: Slide Into Your DMs](https://knowyourmeme.com/memes/slide-into-your-dms)

- [Instagram Help Center: Manage message requests on Instagram](https://help.instagram.com/585369912141614)

- [Instagram Help Center: Send a message to someone on Instagram](https://help.instagram.com/155540431448273)

- [X Help Center: About Direct Messages](https://help.x.com/en/using-x/direct-messages)

- [Messenger Help Centre: Check your message requests on Facebook](https://www.messenger.com/help/936247526442073)

- [LinkedIn Help: Send messages to connections on LinkedIn Messaging](https://www.linkedin.com/help/linkedin/answer/a541865)

- [LinkedIn Help: InMail Messages](https://www.linkedin.com/help/linkedin/answer/a543895)

- [LinkedIn Help: InMail message credits and renewal process](https://www.linkedin.com/help/linkedin/answer/a543695)