Service contains risks and is suitable for some use cases. (Read more)

The service if produced entirely or partly outside EU/ETA area. The customer is responsible for fulfilment of european data privacy and information security requirements. (Read more)


Slack is a cloud-based team collaboration system

Terms of Service & Privacy Policy

Slack Technologies, Inc.  has certified with the EU-U.S. and Swiss-U.S. Privacy Shield

  • Applicable law: The state and federal courts located in San Francisco County, California will have exclusive jurisdiction to adjudicate any dispute arising out of or relating to the Contract or its formation, interpretation or enforcement.

Evaluation (03 Feb 2017)

  • (plus) Data is encypted Point to Point and while "in Rest"
  • (plus) Versatile; Mobile apps, Desktop Client, available via Web Browser
  • (plus) Groups, Channels, Bilaretal messages
  • (plus) Attatchments and Multimedia possible
  • (plus) Open Software Interface
  • (minus) Slack Have suffered of some security issues earlier
  • (minus) Easy to setup Groups using fake/false profiles


  • When you create a Slack account on any team you join, Slack will sign you in for the first time automatically.
  • To create your account and sign in to a team, you’ll first need to activate your account by accepting the email invitation. For step-by-step help, see Join a Slack team.
  • One can create "Invitation Only" croups for demanded e-mail addresses.
  • Sign In can be done using Google accout.


Revenue Model

  • Freemium, Sponsors and Chargeable services


Slack Technologies, Inc.

  • Founded in Canada, Headquarter in San Francisco, California


  • Amazon Cloud

Similar services

  • Skype, Yammer

Common notices

  • Integration possible to (for example) Twitter, Dropbox, Google Docs, Jira, GitHub, MailChimp, Trello, ja Stripe