Slack was previously compatible with non-proprietary "Searchable Log of All Conversation and Knowledge" is a On April 26, 2019, Slack went public without an IPO and saw its shares soar to $21 billion valuation.Slack's free plan allows only the 10,000 most recent messages to be viewed and searched.On March 18, 2020, Slack redesigned its platform to simplify and customize the user experience.Slack teams allow communities, groups, or teams to join a "workspace" via a specific URL or invitation sent by a team admin or owner.Public channels allow team members to communicate without the use of email or group Private channels allow for private conversation between smaller sub-groups. This acquisition will provide additional search offerings of employees within a Slack workspace.8,000 customers signed up for the service within 24 hours of its launch in August 2013.In 2017, Slack was recognized as the best startup of the year at the Slack has additionally been criticized for a retroactive 2018 change to their privacy policy, allowing access to all public and private chat messages by workspace administrators, without the need of consent from any parties using the app.English (UK), English (US), French (France), German (Germany), Japanese, Portuguese (Brazil), Spanish (Latin America), Spanish (Spain) These private channels can be used to organize large teams.Direct messages allow users to send private messages to specific users rather than a group of people. Once started, a direct message group can be converted into a private channel.Slack integrates with many third-party services and supports community-built integrations, including In March 2018, Slack announced a partnership with financial and human capital management firm In July 2020, Slack acquired Rimeto, a startup company focused on directory building.
Content, including files, conversations, and people, is all searchable within Slack. Users can add emoji buttons to their messages, on which other users can then click to express their reactions to messages. Slack offers many IRC-style features, including persistent chat rooms (channels) organized by topic, private groups, and direct messaging. Direct messages can include up to nine people.