As of version 4.0.0 of the Slack client, this mechanism is no longer viable. It does however look like Slack keep the previous release. This means you can force Slack to revert to the previous version e.g. 3.4.3 by deleting the app-4.0.0 folder. Slack will stay at this version until it is updated again. Gaining … Continue reading Achieving persistence in Slack through local file injection