https://saasflation.com/c/slackReviewed Slack pricing and plan changeshttps://saasflation.com/changes/slack/2022-09-01-free-message-historyhttps://saasflation.com/changes/slack/2022-09-01-free-message-historyEffective: 2022-09-01. Slack announced that the Free plan would switch to a 90-day history window on September 1, 2022. The old limit was a number of messages; the new limit is a period of time, so whether a workspace could see more or less history depended on its message volume. This describes the 2022 visibility change; retention rules may have changed since.Thu, 05 Nov 2026 20:53:11 GMThttps://saasflation.com/changes/slack/2022-09-01-pro-annual-pricehttps://saasflation.com/changes/slack/2022-09-01-pro-annual-priceEffective: 2022-09-01. Slack announced that its Pro annual-billed rate would increase on September 1, 2022. Existing annual customers could renew early before September 1 to keep the previous annual rate for another year. Monthly-billed Pro also changed from $8 to $8.75 per active user per month. The displayed $6.67 monthly equivalent is rounded, so an annual total cannot be calculated exactly from it alone.Thu, 05 Nov 2026 20:53:11 GMThttps://saasflation.com/changes/slack/2025-06-17-business-plus-monthly-pricehttps://saasflation.com/changes/slack/2025-06-17-business-plus-monthly-priceAnnounced: 2025-06-17. Slack announced the increase on June 17, 2025, alongside expanded AI features. At the later capture, its pricing page showed $18 as the regular monthly-billed rate and a three-month promotional discount. Slack says customers who purchased Business+ online move to the new plan at their first renewal after August 17, 2025; individual contract terms can differ.