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The 8 Slack Communities Every Marketer Must Join

Mark Jackson

Dec 12, 2023

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Slack holds more power than you can imagine. No, I’m not referring to the Giphy feature or emojiyfing your profile pic. The Slack team managed to develop a tool that connects a group of people in the easiest and most pleasant way possible. And in our cluttered messaging apps world, this is gold.

For those of you who haven’t joined it yet, Slack is the WhatsApp for teams. One of its benefits is the integrations to dozens of services, like Zapier, Mailchimp, Trello, and many others. Over 2 million people are currently using this messaging service every day, and not so long ago Inc. Magazine chose it as 2015 company of the year.

Slack offers one additional opportunity for its users – being active in open communities. Let's dig deeper into Slack communities:

What is a Slack Community?

A Slack community is a group of Slack users that are gathered around a specific topic. For instance, there are Slack communities for marketers, entrepreneurs, designers, and developers. There are also communities for a specific location, like an NYC Slack community.

The community acts just like your team’s Slack chat. The discussions are organized into different channels. For example, in a marketing group, there will be channels for inbound marketing, social media, AMAs etc. A member can chat in a channel of many members, or communicate directly with one of the members only.

Why Should You Join a Slack Community?

There are communities everywhere: on Facebook, Linkedin, Reddit, GrowthHackers, Blab, you name it. Why do you need to join another community?

For the immediate response by great people.

Slack offers the benefits of a community with real-time response. In the thriving communities, the chat is honest and useful. You can ask any question, recommend a good reading or share your experience and get a helpful feedback.

The communities are a great place to find like-minded marketers who encounter the same issues as you and share their solutions.

The downside? You’ll add yourself another time-consuming platform to attend, with must-check notifications.

Thousands of marketers are already there, so you can not afford not to even try it and see what the fuss is all about.  

Before we dive into the recommended marketing communities, here are some recommended Slack manners:

The Slacktiquette

  1. Introduce yourself
    When invited into the community, briefly introduce yourself in the general channel.
  2. Read before you write
    Make sure you get the channel’s vibe before you participate.
  3. Don’t spam
    Unless genuinely contributing to the conversation, don’t self-promote.
  4. Be nice
    People share honest questions and there’s no need to be rude or arrogant with your feedback. Be nice, it’s super easy. 
  5. Write where you’re supposed to
    Before posting your thoughts, make sure you’ve found the best channel for it.

Let's take a look at the most recommended Slack communities:

1. Online Geniuses

  • Members: 2,400
  • Recommended channel: #good_finds

What is it: Online Geniuses is the biggest marketing community on Slack. It’s the right place to ask how to ignite your Snapchat marketing strategy, talk about trends and effectively network.

Look through the current members and see if you know anyone. Chances are if you’re in a niche you’ll recognize a few names
Make an introduction with encouraging people to reach out to you.
Share your location and say you’re always up for a meeting.

2. Buffer

  • Members: 1,400
  • The fun channel: #Bookclub

What is it: A super active community, who covers everything social and also operate location-centered channels, like the area-London or area-Singapore for local members. 

3. Mind the Product

  • Members: 1,200
  • Surprising channel: #twincities – a channel for the Twin Cities of Minneapolis and St. Paul, Minnesota.

What is it: The Slack group of the international product community. Members talk about growth and data-driven product management.
, product marketer, and community builder, share his insights:

If you’re trying to grow a Slack community, the key thing is to be present as much as possible, and help the community find it’s own shape and patterns. Slack is incredibly flexible, and you’ll find that some patterns of behavior will emerge without you having any control over them, and that’s okay!

Be present, connect with your community, and gently work with them to help shape a space that people want to be part of.


  • Members: 550
  • Channel of Opportunities: #CareerAdvice

What is it: The beloved community expanded its boundaries and manages a highly active Slack group. The conversations are about content, SEO, tools, and many other inbound issues.

Precious tips from Mary Green, the mover and shaker of the community, for growing and nurturing a community:

Growing a community is like growing anything else, a lot of time is necessary to push the boulder up the mountain, once it reaches the top, it rolls down quite easily.

The difference with online communities is that you really have to focus on building relationships and talking to people. Honestly make them feel good, help them, tell them about things you think would be useful for them. Spend time looking at their problems and help them make connections with others in the community.

5. Conversion World

  • Members: 300
  • Channel you wouldn’t find elsewhere: #dutch-speakers

What is it: A community of conversion optimizers and data-driven marketing geeks. Many channels help matching members by their location, such as the channels for people from North America, Australia, Belgium, Brazil, and many other countries.

 6. Product Marketing

  • Members: 300
  • The go-hustle channel: #humblebrag

What is it: A place that gathers around growth, product and customer marketers. Powered by Drift, the community offers real-time answers by friendly group members.

Not-to-miss tips from Drift’s Amanda Tessier on how to get the most of a Slack community:

Set a profile picture

Set a profile picture of yourself. You’d be amazed how many people never upload an image or select one of a pet. Using a relevant photo makes it easier to recognize and remember who you are behind the profile.

Introduce yourself

In the groups I’ve joined, there’s usually a channel for this. Utilize it – sometimes people know your company or have held a similar position to you and want to share ideas.

Review the channels and join them

Often people stay in the channels they were automatically added to upon invitation. You’ll find more interesting content in the other areas that might not be shared in the main channels. You can find these by clicking “CHANNELS” on the left sidebar beneath the team name.


This means sharing content, answering questions, and asking for input. Often people are cautious about speaking up. Conversation gets going when a few people start sharing content and lending their expertise.

7. Growmance

  • Members: 150
  • Channel to learn your next hack: #growth

What is it: Definitely the group with the most creative name. Growmance is a community of growth marketers who are not afraid to ask for a honest feedback from the group members about anything. You can run your pdf or email template here and refine it till it’s absolutely perfect.

Ondrej Kubala, the growth hacker behind Growmance, shares his tips for getting the most out of the community:

  • You shouldn’t be afraid to ask. This is how you actually get to know new people.
  • If you know how to help others, go ahead and help them.
  • Stay away from self-promotion. Post it to channels that are used for this kind of things.

8. Grey Fedora

  • Members: 65
  • Too-cool-for-school channel: #hipsters 

What is it: You can tell by the name that this community is something different. The Grey Fedora is a “community of Hustlers, Hackers, and Hipsters aiming to connect and reach their ultimate goals”. Just try it.

9. Creative Tribes

  • Members: 550
  • The channel for building your own community: #tribebuilding

What is it: Share tribe-building strategies, experiences, and resources with fellow entrepreneurs, marketers, and other creatives.

10. Marketers Chat

  • Members: 450
  • Where to find tools for problems you didn’t know you had: #tools

What is it: A real-time Slack chat community for affiliate and internet marketers.

Where Can I Find Slack Communities?

If you are looking for communities other than marketing, here some resources to expand your search and keep you updated:

Can I Start My Own Slack Community?

Sure, anyone can start a new community. Just create one with the sign-up option on Slack’s homepage. After you pick the community’s name and your username you are ready to go. Before inviting new members it’s better to set an automated welcoming message with community guidelines.

How To Jump Start your Slack Community with Influencers

A community needs a massive push at the beginning. Here are the recommended first steps for creating the initial ripple:

  1. Pick a topic that isn’t talked about in other Slack groups.
  2. Invite influencers who are immersed in the topic. They would be your precious early adopters.
  3. Start a conversation at least once a weekday.
  4. Tag them when needed.
  5. Tell people about your community with the help of the influencers’ social power. AMAs, where they invite people to ask them anything on your community, is a good start.

Not sure how to reach out to influencers? Here’s a quick guide to get you started on influencer marketing. Need some help finding the best influencers for your community? Try searching and vetting talents with influencer marketing software like ours: