Slack
Free Plan
Slack Free gives access to 90 days of message history, 10 app integrations, and 1:1 audio/video calls.
Business Messaging

Shared Technologies & Standards

✅
SOC 2 Type II Certification
AICPA (American Institute of CPAs)
📋
GDPR Compliance
European Union
🔑
OAuth 2.0 / OpenID Connect
IETF / OpenID Foundation
🔑
SAML 2.0 / Enterprise SSO
OASIS Standards
🔑
TOTP / Multi-Factor Authentication
IETF (RFC 6238)
🔗
REST API / HTTP Standards
Roy Fielding (W3C/IETF)
🛡️
HTTPS / TLS 1.3
IETF (RFC 8446)
🤖
OpenAI API (GPT-4o, o1)
OpenAI

Plan Features & Specifications

PriceFree
Message History90 days
Integrations10 app integrations
Video Calls1:1 video/audio calls only
Storage5 GB file storage total
SearchSearch up to 90 days of messages
Workflows1 workflow automation

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