Slack Pricing 2026

Slack Pro costs $8.75/user/month with annual billing. Business+ costs $18/user/month with annual billing. Enterprise+ has custom pricing. There is also a free plan with 90-day message history and up to 10 app integrations.

Slack has a free plan with significant limitations: 90-day message history (older messages become inaccessible), only 10 app integrations, 1:1 huddles only (no group calls), and 5GB total storage. Most teams outgrow the free plan quickly.

On Slack's free plan, messages older than 90 days become inaccessible - you can't search or view them. They're not permanently deleted; upgrading to a paid plan restores full access to your message history.

Pro ($8.75/user/month) includes unlimited message history, unlimited app integrations, group huddles, and 10GB/user storage. Business+ ($18/user/month) adds SAML SSO, 99.99% SLA, compliance data exports, SCIM provisioning, and 20GB/user storage. Choose Business+ if you need SSO or compliance features.

Enterprise+ (custom pricing) is designed for large organizations. It offers unlimited workspaces organized under one umbrella, HIPAA compliance, DLP, eDiscovery, Enterprise Key Management, and dedicated support. Requires annual commitment, often 3-year deals.

Guest policies vary by plan. On Pro, guests using Slack Connect (external channels) count toward your paid seats. Business+ and Enterprise+ have more flexible guest policies but may still incur costs at scale. Verify guest billing before inviting external users.

Slack Pro at $8.75/user/month is more expensive than standalone Teams Essentials at $4/user/month. However, Teams is included free with Microsoft 365 Business Basic ($6/user/month). If you have M365, Teams is essentially free. Slack positions as premium with better integrations and UX.

Slack now includes basic AI features (AI search, conversation summaries, daily recaps, file summaries) in all plans including Free. Business+ at $18/user/month includes advanced AI capabilities. Previously, Slack AI was a separate paid add-on, but as of 2025 core AI features are bundled into all tiers.

Slack offers: ~20% savings with annual vs monthly billing, 85% off for eligible nonprofits (one of the most generous in SaaS), education discounts for schools, and volume discounts for 250+ users. As a Salesforce company, negotiate at quarter-end for best deals.

Yes, Slack offers 85% discounts for eligible nonprofits and NGOs through their nonprofit program. Educational institutions can access free or heavily discounted plans. Apply through Slack's official program pages with verification documents.

Slack uses 'fair billing' - you only pay for active users. Inactive users are automatically credited. Choose monthly or annual billing (annual saves ~20%). Pro-rated charges apply when adding users mid-cycle. Removing users credits your account for the remaining period.

Yes, for teams over 50 users or deals exceeding $10K annually. As a Salesforce company, negotiate at quarter-end (Salesforce's fiscal year ends January 31). Typical discounts: 15-30% off list for volume, multi-year commitments unlock deeper discounts. Enterprise+ is always negotiable.

Free plan: 5GB total for entire workspace. Pro: 10GB per user. Business+: 20GB per user. Enterprise+: 1TB per user. Storage includes files, images, and attachments shared in channels and DMs.

Only Enterprise+ supports HIPAA compliance with a signed Business Associate Agreement (BAA). Pro and Business+ do not offer HIPAA compliance. Healthcare organizations must use Enterprise+ for handling PHI.

Slack's per-user pricing model becomes expensive as teams scale. Additionally, essential enterprise features like SAML SSO are locked behind the most expensive tiers, nearly doubling costs. Many users report that bundled alternatives like Microsoft Teams (included with Office 365 at no additional cost) provide similar functionality at a much lower total cost of ownership.

Common alternatives mentioned include Microsoft Teams (bundled free with Office 365), Discord (free for basic use), and various open-source options. For nonprofits and small teams, Discord is frequently cited as a free alternative. Enterprise teams often switch to Teams to reduce costs since it's included with existing Microsoft licensing.

No. The free plan only retains the most recent 90 days of message history. Older messages are hidden (not deleted) but you cannot access them unless you upgrade to a paid plan (Pro or higher).

Yes. SAML-based SSO (required for Okta, OneLogin, etc.) is only available on the Business+ plan ($18/user/month) or higher. Google Workspace SSO is available on all plans including free.

Customize notification settings per channel (Settings > Notifications). You can mute channels, set Do Not Disturb hours, and configure thread notifications. Many users recommend setting most channels to 'mentions only' to reduce noise.

User reviews indicate mixed support quality. Even Business+ customers report 7+ day response times and unhelpful auto-generated replies. Enterprise Grid customers may receive better support, but standard paid plans do not guarantee responsive service.