Find the right Slack reviewer by email
When names are inconsistent, an exact email gives your PR handoff a reliable starting point.
Trigger
New Pull Request Created
Triggers when a new pull request is created in GitHub, matching the optional configured filters. Emits an event for each newly created pull request. Supports filtering by repository, owner/organisation, author, assignee, label, state, base branch, head branch, and draft status.
Action
Lookup users by email
Retrieves the slack user object for an active user by their registered email address; fails with 'users not found' if the email is unregistered or the user is inactive.
Why this helps
A reviewer can be easy to identify in GitHub but hard to locate in Slack.
- Avoid contacting the wrong person
- Make reviewer handoffs explicit
- Get a clear not-found result
Setup
Build it in a few focused steps.
- 1Connect GitHub and Slackbot once.
- 2Create a plain-language automation that resolves the supplied reviewer email from each new PR in Slack.
- 3Choose New Pull Request Created and a report channel.
- 4Test with one real PR and a supplied reviewer email.
Questions about this workflow
What happens for an unregistered email?
Notis reports that Slack could not find an active user.
Does this message the reviewer?
No. It only retrieves the user record.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link GitHub to Slackbot. A trigger fires from one place; an action lands in another.
GitHub triggers
Slackbot actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
New Workflow Artifact Created
Triggers when a new workflow artifact is created in a GitHub repository. Monitors for newly created GitHub Actions workflow artifacts. Optionally filters by artifact name to restrict monitoring to specific artifacts.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Branch Changed
Triggers when a GitHub branch changes. Monitors a specific branch for: - New commits pushed (head commit SHA changes) - Protection status toggled (branch becomes protected or unprotected) - Protection settings changed, including: required status checks and their enforcement level, admin enforcement, required pull request reviews (dismiss stale reviews, code owner reviews, approving review count, last push approval), required linear history, force push allowance, deletion allowance, conversation resolution, branch locking, and fork syncing.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
New Branch Created
Triggers when a new branch is created in a GitHub repository. Detects newly created branches. Deleted branches do not fire events.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Check Run Status / Conclusion Changed
Triggers when a specific GitHub check run changes its status or conclusion. Monitors a single check run for changes to: status (queued, in_progress, completed, etc.), conclusion (success, failure, neutral, cancelled, skipped, timed_out, action_required), started_at, and completed_at.
Add call participants
Registers new participants added to a slack call.
Check Suite Status / Conclusion Changed
Triggers when a GitHub check suite changes its status or conclusion for a given ref. Monitors all check suites associated with a git reference (branch, tag, or commit SHA) for changes to status (queued, in_progress, completed, etc.) and conclusion (success, failure, neutral, cancelled, skipped, timed_out, action_required, startup_failure, stale). Optionally filters by GitHub App ID.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
New Code Scanning Alert Created
Triggers when a new code scanning alert is created in a repository. Fires an event for each newly created code scanning alert detected in the configured repository. Alerts can be filtered by Git reference, scanning tool, state, and severity. The payload includes the alert number, rule details, tool information, state, severity, and the location of the most recent instance.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
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When this happens · Trigger
Do this · Action
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