Based on 64 verified reviews published in the last 18 months
TrustRadius Community Insights are summaries of user sentiment data from TrustRadius reviews and, when relevant, HG Insights data.
Overview
Synthesised from 64 reviews | Last Published May 26, 2026
Slack functions as a primary internal communication platform, enabling seamless interaction and collaboration for teams, particularly in remote and distributed environments. In TrustRadius reviews, users leverage it for direct messages, group channels, and organizing discussions by topic. Its robust integration capabilities are a key strength, with 39% of reviewers highlighting their value for streamlining workflows and centralizing notifications.
While enhancing communication speed and efficiency, reviewers frequently note challenges with search functionality, with 19% citing difficulties finding older messages. Thread management can also be clunky, and notification systems are often overwhelming. Despite these points, the platform generally delivers a positive ROI by boosting productivity and reducing email clutter, though some raise concerns about subscription costs.
Pros
Seamless integration with other applications for centralized workflows
Effective audio and video communication via Huddles for real-time interaction
Structured organization of discussions through dedicated channels
Improved communication speed and overall efficiency
Significant reduction in internal email clutter
Cons
Challenges with search functionality for older messages and files
Difficulty with thread management leading to missed messages
Overwhelming and insufficiently configurable notification systems
Occasional audio problems and instability with Huddles
Concerns regarding subscription costs and license management
Our team uses Slack in tandem with Miro. Slack helps us track Miro notifications live, which is something that Miro is lacking in. We use the same email group for our team so everyone sees every comment in real time. This helps us immensely because our team is across continents.
Pros
Notificaitons
App usage
Quick communication
Cons
When one team member clicks on the app, the notication goes away
Change of settings
team creation
Likelihood to Recommend
Slack works really well for quick communication between companies. We use this with our partners for live updates on projects. We use Slack in tandem with Miro, which is super helpful for the projects that we work on. It might work a little better if every team member used their own email for an account, that isn't how our team uses.
Slack is our daily communication hub, connecting teams, departments, and external stakeholders. It solves siloed communication and email overload, enabling real-time collaboration, file sharing, and streamlined workflows. With integrations and transparency, it supports cross-company reviews and faster decisions, ensuring efficiency and alignment across our organization. Every day, we rely on it—and love it!
Pros
Smiley emojis and mentions.
Channels and their notification settings.
The phone app and pc integration.
Cons
Gif integration.
Reminder customization.
AI integration.
Likelihood to Recommend
Slack is much better and easier to use than Teams and other apps. It is a simple and enjoyable platform that makes communication and collaboration smooth. With its straightforward design, fun features, and playful tools like custom emojis and integrations, Slack makes teamwork both practical and more enjoyable every day.
VU
Verified User
Representative in Customer Service (11-50 employees)
Slack allows my colleagues and I to discuss internally regarding a multitude of matters that our org faces day to day, but making sure it is neatly organized into channels.
Pros
Provides organized storage of communications
Allows our org to stay close to one another by offering channels where we can disconnect from work and talk about hobbies and life outside of work. This is extremely important as our role is a remote position.
Is able to integrate with many of our data pulls that can notify us when we need to take action on a customers account.
Cons
They could make the UI more user friendly by allowing you to organize channels even further
They could make the UI more aesthetically pleasing to the eyes.
Likelihood to Recommend
I really don't have any complaints about Slack. It has allowed my team and I to really stay well connected and be able to discuss high level matters more seamlessly than an email would. I do think they could make the UI more aesthetically pleasing and improve their huddle capabilities, so when you share your screen, it easier to navigate.
Internal communication, communication with external partners, and automated notifications. Apart from standard communication, it allows to easily automate processes and provide alerting capabilities that can be acted upon by non-technical users. It also integrates well with external applications and services, including providing notifications (e.g. resource access requested) and basic management (e.g. grant access to requested document) capabilities.
Pros
threads
integration with external services
ease of use
Cons
huddles
more compact UI
collaboration with external partners
Likelihood to Recommend
Slack is much more pleasant to use than corporate communication tools (e.g. MS Teams) and in my experience facilitates online communication better than the mentioned alternatives. Multitude of integrations with popular applications and services (e.g. Miro) can easily make it a one-stop-shop for your day-to-day activities within your company.
I've been using Slack for four years and have been using it at my present company (SAYN) for over a year. Slack is an important communication tool in my organization. We use it to streamline daily operations. Slack helps us manage a variety of business concerns, including lowering dependency on email for internal communication and promoting seamless collaboration among distant or hybrid teams.
The integration of third-party technologies such as Google Drive improves our workflow by consolidating all relevant resources in one location. Most Importantly, Slack’s search functionality helps us to find old conversations and files quickly. Overall I am happy using Slack.
Pros
Slack's instant messaging enables our team to communicate in real time, accelerating decision-making and problem-solving.
When we have tight deadlines, rapid approvals may be requested in seconds with the help of dedicated project channel.
Slack’s channel system helps organize conversations by topics, teams, or projects. This makes it easy to focus on relevant discussions.
We have separate channels for our marketing, operations, finance, business development & warehouse team.
Slack enables quick file sharing directly in conversations or channels.
When launching a new marketing campaign, our team shares assets like photos and videos directly in the marketing channel.
Cons
Undoubtedly Slack’s search function is powerful but sometimes it is difficult to find specific messages or files in very active channels with high message volumes. This needs an improvement.
I have experienced notification issues on my phone. I am not receiving notifications and have missed important updates as a result. I tried uninstalling and reinstalling the app, but the problem still persists.
The Business Plus plan does not include support for data loss prevention or offline backup providers.
Likelihood to Recommend
SaynBeauty is a fast-paced startup where real-time communication is crucial, and Slack excels in this environment. For example, during tight project deadlines, our teams can quickly coordinate tasks, ask questions, and resolve issues without delay.
We have to use Google Drive for sharing large videos, as Slack has limitations when it comes to managing large files.
We use it for our daily communications, it addresses the need for immediate communication and promoting engagement and pushing business needs and news.
Pros
It allows for fast smooth communication
Easy integrations
Workflows and automations
Cons
In Slack bug reporting tool
Likelihood to Recommend
When there's an escalation that needs to be addressed immediately Slack provided the ideal platform by allowing quick contact and therefore assists una quick resolution as well.
If the topic is a sensitive one, communication might be too sensitive to be living in Slack backend.
Also huddles are a good quick way to engage in live communication
VU
Verified User
Professional in Customer Service (1001-5000 employees)
1. Communicating with people 2. Opening threads for the communication 3. Announcements Channels for company wide messages 4. Way to view the alerts 5. Support channel for helping the users 6. Requests channel to requests various services 7. Integration with Gitlab to view the status of Task and Merge requests
Pros
Communication
Save for later features
Notifications
Cons
Threads maintaining
Notification support in Ubuntu like Mac
Huddle UI can be easier to use
Likelihood to Recommend
Communication with people Organization level isolation Quick huddle option when needed Good message editor which helps to add emojis, gif, threads, pics, videos Sharing the message is much easier Groups are easier to maintain Pinned messages are much easy to help to find the important message Later messages are nice and can be used to save some important messages to be replied later
The usage of Slack in our organization is by being able to communicate with other department within our account. It is one of the main things that I personally use when I escalate cases to our higher team or executive which is really important to the work load that I currently do in my daily basis.
Pros
Slack is good for managing threads
Slack is great when you want to escalate things with proper documentation
Slack has good features that allows the user to customize the thread
Cons
Design of the interface
Customizability
Loading speed
Likelihood to Recommend
I think Slack would be a perfect fit for business related purposes, but if I would use Slack for daily usage regarding about my personal use like social life I think Slack is more inclined to professional use so what I can tell about Slack is that it has all the components of what a typical social media platform is but in professional manner.
VU
Verified User
Representative in Customer Service (1001-5000 employees)
Slack is primarily used as a communication tool, either by DM with other coworkers, to group channels, or in conjunction with automation to third party programs. This is particularly useful for customer service/experience teams and touts Google Workspace integrations, Cloverleaf, Zapier, and customer platforms like Zendesk, Customer etc.
Pros
User administration
Team communication
Integrations
Cons
More readily accessible administrative options
Pricing
Likelihood to Recommend
Slack has been very well suited for a range of companies that I've utilized services through. This ranged from startups with ~50 staff, to larger corporations with 400+ staff. It is easy to use from a corporate staff perspective, retail staff, and as an administrator for staff/teams. I think it might not make sense as a service for teams of 20 or less, though have not tried the use case myself (my decision would boil down to use-case and pricing). If a company has a range of services they're looking to integrate and Slack offers plugins, I would recommend exploring.
VU
Verified User
Employee in Information Technology (51-200 employees)
As we are a global company, we use it to collaborate across many time zones when we aren't able to actually meet. It is most useful when we need to communicate with APAC, Europe and the America's at the same time as usually one of us will be offline at least. As we mostly work from home these days, it is also essential for just day to day communication when a Zoom meeting isn't really needed.
Pros
Private groups specific to a task or sub-set of people.
Integrates with other apps like Google calendars etc.
Understands that people aren't available all the time and has tools that help people stay offline when they mean to be offline.
Cons
The requirement to sign back in periodically always happens at a very inconvenient time.
Threads can be difficult to follow as notifications could be better about new replies to certain thread.
Likelihood to Recommend
I haven't come across a professional instant messaging service that works as well as Slack. It plugs in to a lot of other work based applications seamlessly like Google Calendars and Zoom. It is a great place to collaborate across the globe as it is sensitive to peoples work/life balance with things like a "do not disturb" mode, the ability to set working hours and schedule message sending.
