Create your own Slack and PostHog integration

Choose a triggerChoose an action

Choose a trigger

Choose an action

When Slack: A new channel was created in the workspace happens, do PostHog: Create an alias linking two distinct user IDs.

Get started with Slack and PostHog on Corsair Hub

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Popular Slack and PostHog workflows

When this happens in one app, do this in the other. Try it on Hub to connect both apps and run the pair.

Page #growth when checkout funnel drops

When PostHog captures a sharp drop in checkout_completed, post the funnel snapshot to #growth.

TriggerA PostHog event was captured

ActionPost a message to a channel

PostHog + SlackTry it →

Log Slack flag debates to PostHog

When PMs debate a rollout in #product, ingest a PostHog event noting the thread URL.

TriggerA message was posted or updated in a channel

ActionEvent Create

Slack + PostHogTry it →

Acknowledge experiment alerts in Slack

When on-call reacts :eyes: on a PostHog alert, update the Slack message with who is investigating.

TriggerA reaction emoji was added to a message

ActionUpdate an existing message

Slack + SlackTry it →

Find Slack context for metric spikes

When PostHog fires an anomaly event, search Slack for related deploy or flag threads.

TriggerA PostHog event was captured

ActionSearch messages in the workspace

PostHog + SlackTry it →

Alias anonymous IDs from new channels

When a beta channel spins up, create PostHog aliases linking test users to the channel cohort.

TriggerA new channel was created in the workspace

ActionCreate an alias linking two distinct user IDs

Slack + PostHogTry it →

Track beta screen views from launches

When a launch checklist file is shared, track a PostHog screen event for the beta UI entry point.

TriggerA file was uploaded or created

ActionTrack Screen

Slack + PostHogTry it →

Agent

Use Corsair's MCP with your agent

Corsair connected

The agent searches both apps before it answers.

Did signup conversion drop after we toggled the onboarding flag?

PostHog shows signup_completed down 18% since 10 AM compared to yesterday; the drop aligns with flag onboarding-v2 enabled for 50% of users. Slack #growth has an active thread where Maya posted the same chart and noted support tickets about missing SSO on the new flow; eng replied they are rolling back the flag for enterprise domains.

Slack and PostHog details

Slack

Team messaging platform for channels, direct messages, files, and workplace collaboration.

See Slack integration Slack docs

PostHog

Product analytics platform for event tracking, feature flags, session replay, and experiments.

See PostHog integration PostHog docs

Slack and PostHog FAQ

Yes. Corsair is built with a REST API. This means you can build agents, knowledge bases, interfaces, and workflows.

Yes. Connect Slack and PostHog once in Corsair, then automate in either direction with typed triggers and actions tailored to how your team works.

Post funnel alerts to Slack, log product discussions as PostHog events, alias beta cohorts, and search Slack when metrics spike.

Yes. PostHog captured event webhooks plus Slack message, reaction, channel, and file events are typed triggers with tenant matching built in.