Slack
FreemiumWhere work happens
About Slack
Slack is a team messaging platform organized around channels, direct messages, and threaded conversations. Free (90-day message history, 10 integrations); $8.75/user/mo Pro, $15/user/mo Business+, enterprise custom. The free tier 90-day history cap is the biggest friction — you lose older messages entirely, making it unsuitable for long-term knowledge storage. The Pro plan at $8.75/user/mo gives unlimited history and integrations. Slack has 2,400+ app integrations and strong developer tooling: webhooks, slash commands, the Bolt SDK for building Slack apps, and Workflow Builder for automations. The Huddles feature replaced most quick-call scenarios without leaving Slack. Main Reddit complaints: distracting by default, notification management requires real effort, and pricing has increased since Salesforce acquired Slack for $27.7B in 2021. Compared to Microsoft Teams, Slack has a better developer experience and cleaner UI but costs more per seat. Discord is cheaper for informal teams. Mattermost and Zulip offer self-hosted alternatives. For engineering-heavy companies doing async-first communication with strong tooling integration needs, Slack is hard to beat despite the cost.
Key Features
Pricing Plans
Verified April 2026Free
- 90 days of message history
- 10 app integrations
- 1:1 huddles
- Connect with external orgs
Pro
- Unlimited message history
- Unlimited integrations
- Group huddles
- Workflow Builder
Business+
- SAML SSO
- Data exports
- User provisioning
- 24/7 support
Enterprise Grid
- Unlimited workspaces
- HIPAA compliance
- DLP integrations
Pros
- Industry-leading integration ecosystem (2000+ apps)
- Excellent channel organization for topic-based communication
- Huddles provide low-friction voice conversations
- Strong search across all historical messages
- Slack Connect enables secure external collaboration
- Reliable real-time messaging with good uptime
Cons
- Free tier limited to 90-day message history
- Expensive per-seat pricing ($12.50-15/user/month)
- Desktop app uses significant RAM
- Notification overload common in active workspaces
- Threading can fragment important discussions
Best For
- Remote and distributed teams needing async communication
- Tech companies with heavy integration needs
- Cross-functional teams requiring organized channels
- Companies using multiple SaaS tools needing a central hub
Not Ideal For
- Budget-conscious small teams (pricing adds up fast)
- Teams wanting simple chat without complexity
- Organizations requiring end-to-end encryption
Potential Deal Breakers
- 90-day message history limit on free plan
- Per-seat pricing scales poorly for large teams
Data & Privacy
Salesforce updated Slack terms in 2024 to allow using customer data for AI/ML model training, sparking backlash. They later clarified this requires explicit opt-in and does not apply to message content by default. Workspace admins can opt out entirely. Enterprise Grid offers data residency in specific regions. Full message export available for admins.
Who Is This For?
Hands-on tested May 2026
Signup Experience
Email signup creates a workspace in about 60 seconds. Free tier lets you try everything with a 90-day message history limit. Onboarding walks through channels, DMs, and integrations. Inviting team members is straightforward.
For Home Users
Unnecessary for most home users. Discord does everything Slack does for free with no message limits. Only reason to use Slack personally is if communities you belong to run on it. The free tier 90-day message history limit is frustrating — important conversations disappear.
For Business Users
The standard for team communication. $8.75/user/mo Pro plan removes message history limit and adds screen sharing, huddles, and better integrations. Worth it for teams over 5 people. Integrates with almost everything. Huddles feature is underrated — quick voice calls without scheduling meetings. Gets noisy in large organizations without disciplined channel management.
What Users Say
“Slack is amazing for async communication but the free tier limits are brutal - we lost years of context when we hit 90 days.”
— Reddit user
“The integrations are what keep us - nothing else connects to our stack as well.”
— Reddit user
“Huddles changed how we do quick syncs - way better than scheduling Zoom calls.”
— Reddit user
Our Verdict
Slack remains the gold standard for workplace messaging, with unmatched integrations and reliability. The main drawbacks are cost (which adds up fast at scale) and the 90-day history limit on free plans. Best for tech teams with integration needs; consider Discord or Teams if budget is tight.
Related Articles
Mattermost vs Slack vs Teams in 2026: When Self-Hosted Chat Matters
Slack is better to use. Teams is better integrated with Microsoft. Mattermost is better when you need to control where your communications data lives — and for ITAR, FedRAMP, and air-gapped environments, that's not a preference, it's a compliance requirement.
Read morePricing & ValueSlack Pricing 2026: Is It Worth $12.50/User After the Price Hike?
Slack raised its Pro plan from $8.75 to $12.50 per user per month — a 43% increase — and simultaneously cut the free plan's message history from 90 days to 90 days (unchanged) while reducing searchable messages. For many teams, the math now points toward alternatives.
Read moreComparisonsSlack vs Discord for Work in 2026: Is Free Discord Good Enough?
Your startup uses Discord because it was free and everyone already had an account. Now you have 30 people in the server and you're wondering if you should have picked Slack. You're not alone — this question comes up constantly on Reddit, and the answer isn't as obvious as the enterprise crowd wants you to believe.
Read more