Email Lookup Across Systems: Find Slack Users Instantly
Your CRM sends a webhook with a customer contact's email. Notis finds the matching Slack user so you can @mention them in a channel invite or direct notification.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Find users
Find users in a slack workspace by any criteria - email, name, display name, or other text. includes optimized email lookup for exact email matches.
Why this helps
You need to invite or notify someone but have to manually search Slack for their account because you only have their email. Time-consuming and error-prone.
- Automate user lookups from external systems
- Accurate team targeting without manual search
- Enable seamless cross-system workflows
- Reduce manual admin work in team coordination
Setup
Build it in a few focused steps.
- 1Connect ClickUp and Slack to Notis via the portal
- 2Create an automation: 'When I send a webhook with an email address, find the matching Slack user and return their user ID'
- 3Configure the webhook to accept email in a specific field
- 4Test by sending a webhook with an email and verify Slack user info is returned
- 5Use the returned user ID in subsequent automations (e.g., channel invites, mentions)
Questions about this workflow
What if the email doesn't exist in Slack?
Notis will report no match. Your automation can handle this (alert or skip).
Can we look up by name instead of email?
Yes. You can ask Notis to look up by email, name, or display name depending on what your external system provides.
Is this secure?
The webhook endpoint is unique and secret. Only your external systems should POST to it. Slack user lookups use standard API auth.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Clickup to Slack. A trigger fires from one place; an action lands in another.
Clickup triggers
Slack actions
Folder Created
Triggers when a new Folder is created.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Folder Deleted
Triggers when a Folder is deleted.
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.
Folder Updated
Triggers when a Folder is updated (renamed, content edited, etc.).
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
List Created
Triggers when a new List is created.
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.
List Deleted
Triggers when a List is deleted.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
List Updated
Triggers when a List is updated (renamed, content edited, etc.).
Add call participants
Registers new participants added to a slack call.
Space Created
Triggers when a new Space is created in the Workspace.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Space Deleted
Triggers when a Space is deleted.
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.
Connect any two apps with Notis in the middle.
Not just Clickup and Slack. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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