Slack nailed the core loop of team chat, but everything around the messages is where it falls down. There is no real inbox, only read and unread, so the only way to not forget something is to never let it scroll away, which is why Slack feels like anxiety with notifications. And it is an island: to connect a message to an email, a doc, a task or a customer you reach for screenshots and integrations.
Macro keeps Slack's good part, the fast channel, and rebuilds the rest: a real inbox, a Signal/Noise split, and channels wired into your email, docs, tasks, calls and CRM with one shared memory. Chat becomes calm and connected instead of loud and isolated.
What Slack got right about team chat, and where we think a chat-only app leaves real work on the table.
At a glance
| Macro | Slack | |
|---|---|---|
| What you get | Channels inside a full workspace | A best-in-class standalone chat app |
| Inbox | A real inbox; leave messages for later | Read and unread only |
| Focus | Signal and Noise, AI-sorted | Notifications and mute |
| Connected to | Email, docs, tasks, calls, CRM | Outside apps via integrations |
| @-mentions | Anything in your company | People and channels |
| Fast team channels | Yes | Yes (the benchmark) |
| Create tasks from messages | Yes, native and linked | Via integration |
| Native email client | Yes | No |
| Docs and editor | Yes (CRDT, agentic) | Canvas (basic) |
| CRM | Yes (auto-updating) | No |
| Calls | In-channel, recorded, transcribed | Huddles (no memory) |
| App directory and integrations | Growing | Extensive |
| Cross-company channels | Limited | Yes (Slack Connect) |
| Shared team memory | Yes, across every surface | No |
| Open source | Yes, end to end | No, closed box |
| Pricing model | Flat, by company stage | Per seat, by plan tier |
A real inbox, not just read and unread
This is the one that changes how the day feels. Slack, like iMessage and most chat apps, has no inbox; it only knows whether you have seen a message. So the only way to remember to deal with something later is to leave it unread and hope, or to star it into a list nobody trusts. The result is the low background dread of an app you can never quite get to the bottom of.
Macro gives channels a real inbox, like email. You can let a message wait for you instead of having to reply now or risk losing it as it scrolls away. The second-order effect is the whole point: less context switching, fewer half-answers fired off to clear a badge, and more focused collaboration, because you can trust that what matters will still be waiting when you are ready for it.
Signal and Noise
Not every channel deserves the same urgency, and Macro lets you say so. Mark #bug-reports as Signal so it lands in your main inbox, and leave #random as Noise so it is there when you want it and silent when you do not. An AI does the sorting across messages, email and tasks alike, so the important things surface and the rest stays out of your way.
Slack's answer to overload is notification settings and muting, which is genuinely useful but is still you fighting the firehose by hand, channel by channel. Macro's default is a quieter, more readable surface where focus is the design, not a preferences screen you have to keep tending.
Integrated with everything else
This is the biggest thing about Macro's channels: they are wired into the rest of your work. @-mention anything, a doc, a file, an email, a task, a customer, a recorded call, and it is shared with the channel and linked bidirectionally, so the message and the thing it references both know about each other. Discussing a support issue? @-mention the customer's email, the ticket, the related doc and the call where it came up, all in one place.
That web is also how permissions work. Anything you @-mention in a channel is automatically shared with its members; join a channel and you gain access to its context, leave and you lose it. There is no permission request dance, because membership is the permission. Channels stop being a place you copy information into and become the place that keeps everything else up to date.
Turn a message into a task
So much real work is announced in chat and then promptly forgotten. In Macro you can act on it in place. Mention @Macro and ask it to create a task, or several, from what was just said. Or click Create task on any message to make one deterministically, bidirectionally linked to that message so the task's conversation and the channel's conversation stay deep-linked.
In Slack this is the job of a third-party integration that lifts the text into a separate tool, severing it from the thread. In Macro the message and the task are two views of the same object, because the tracker and the chat are the same app.
Huddles that record themselves
Macro combines the ease of a Slack huddle, spin one up in any channel or DM without sharing a link, with the comprehensiveness of a real meeting tool. Calls work like Google Meet too, so you can share a link with anyone, and they run across devices with high-quality audio and video and nothing to install.
The difference is what happens after. By default, calls are recorded, transcribed, diarized per speaker and shared with your team, so the decisions made on a quick huddle do not evaporate the moment it ends. Slack huddles are great for the live conversation and gone the instant it is over; Macro turns the same convenience into lasting memory.
A threading model built for real work
Threading is a genuinely hard design problem and everyone solves it differently. Slack's side-flap threads are tidy for organization but can make conversations hard to find. iMessage and Discord are great for casual back and forth but not deep technical threads. Reddit's infinite nesting is forum-like rather than chat-like.
Macro shows the first couple of replies inline instead of hiding them behind a flap, which we landed on as the happy medium for collaboration after living in it with our own team. You get enough of the conversation in context to follow it without opening a panel, while still keeping things organized. It is opinionated, and it is the result of actually using the thing every day.
Shared memory across your whole team
This is the thing a chat-only app structurally lacks. Macro builds memory from everything: your channels, your email, your docs, your tasks, your calls, and the deals in your CRM, and it does it across your whole team, not just your own message history. It refreshes nightly.
Because the memory spans the company, Macro's agents can do things a standalone chat tool cannot: route a customer report in a channel to the right owner, assign a task to whoever actually handles that area, or tell you who to ask. An app that only sees messages cannot reason across all your work. A unified workspace can.
More than chat: email, docs, tasks and a CRM
The honest framing is that this is not a comparison of two chat apps. Slack does team chat, brilliantly. Macro does team chat and is also your email client, your docs, your tasks and your CRM. The email is Superhuman-fast on your own database. The docs collaborate in real time over CRDTs. The CRM updates itself one block away. So putting Macro next to Slack is putting one connected app next to chat plus the stack you keep open around it.
Where Slack still wins
Slack is genuinely better at several things, and we will not pretend otherwise. Its app directory and integration ecosystem are enormous, so almost any tool you use already has a Slack connector. Slack Connect makes cross-company channels with vendors and customers easy, and after years in market it is the default everyone already has, which is its own kind of moat. If your priority is plugging into a huge web of third-party apps or chatting with external organizations that already live in Slack, Slack is the right call and you should keep it.
Who should switch to Macro
The switch makes sense when your setup is Slack plus a mail client plus a docs tool plus a tracker plus a CRM: five tools that do not share context, five interfaces to check, five bills that grow with headcount. That is exactly the stack Macro collapses into one fast app with one memory. The low-risk way in is to run Macro alongside Slack for a week, move a few active channels over, point your email at Macro, and feel the difference a real inbox and a Signal/Noise split make before you decide what comes across.
FAQ
Is Macro a good Slack alternative?
Yes, if you want the fast channels but are tired of an app with no inbox that lives apart from the rest of your work. Macro keeps the good part of Slack and adds a real inbox, an AI Signal/Noise split, and channels wired into your email, docs, tasks, calls and CRM. If your priority is Slack's huge app directory or external Slack Connect channels, Slack is still stronger.
What can Macro do that Slack can't?
Give your messages a real inbox so you can leave them for later, sort channels into Signal and Noise with AI, @-mention and bidirectionally link anything in your company, turn a message into a linked task, and record and transcribe in-channel calls into a shared team memory. It is also a full email client, docs tool and CRM.
Does Macro have a real inbox for chat?
Yes. Unlike Slack's read/unread model, Macro gives channels an email-style inbox, so a message can wait for you instead of forcing an immediate reply or scrolling out of sight. Less context switching, more focus.
Does Macro have huddles or calls?
Yes. You can start a call in any channel or DM like a huddle, or share a link like Google Meet. Calls run across devices with nothing to install and, by default, are recorded, transcribed and diarized into your team's shared memory.
Can Macro replace Slack?
For internal team communication and the work tangled up with it, yes. For a sprawling third-party app ecosystem or cross-company channels with external orgs already on Slack, Slack is still ahead, so some teams may keep both during a transition.
Is Macro open source?
Yes, end to end: github.com/macro-inc/macro. Your data stays open and portable and the app is extensible. Slack is closed source.
How does Macro handle notification overload?
By default, not by settings. An AI sorts messages, email and tasks into Signal and Noise, and you can mark whole channels as one or the other, so the important things surface and the rest stays quiet without you tuning preferences channel by channel.
Try Macro
Macro is one app for all your work: docs, email, chat, tasks, calls and CRM, unified, fast, keyboard-first, and open source. If you want Slack's channels without the noise, the scroll-away anxiety, and the wall between chat and everything else, this is the one that replaces the stack.
Get started with Macro