Trigger Slack alerts from custom email events via webhook
For advanced workflows, send email events to Notis via webhook and trigger custom Slack messages based on conditions you define.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Post message to channel
Deprecated: posts a message to a slack channel, direct message, or private channel. use `send message` instead.
Why this helps
Standard email triggers aren't flexible enough for complex multi-step workflows, and founders end up building custom integrations instead of using automation.
- Enable advanced automation scenarios that standard triggers can't handle
- Connect external email systems or custom scripts to Notis for complete control
- Build complex conditional logic based on email metadata
- Integrate email events from sources beyond your Gmail account
Setup
Build it in a few focused steps.
- 1Connect Gmail and Slack to Notis.
- 2Create an automation: ask Notis 'Set up a webhook that listens for email events and posts to Slack' or use the portal.
- 3Describe the outcome: 'When a webhook receives an email event, extract key fields and post them to #email-events with a custom format.'
- 4Select the trigger: Notis Webhook.
- 5Notis will provide a webhook URL you can use with external tools, Zapier, or custom scripts.
- 6Test by sending a sample webhook payload to the URL and verifying the Slack message appears.
Questions about this workflow
What format should the webhook payload be in?
Tell Notis in your prompt what data you'll send (e.g., sender, subject, body, timestamp) and it will parse it automatically.
Can I use this with external email services?
Yes. Any service that can send webhooks can trigger Notis automations. Common examples: custom Node.js scripts, AWS Lambda, Zapier, or IFTTT.
Is webhook authentication required?
Notis provides a secure webhook URL. For sensitive use cases, you can add authentication headers in your prompt.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Gmail to Slack. A trigger fires from one place; an action lands in another.
Gmail triggers
Slack actions
Email Sent
Triggers when a Gmail message is sent by the authenticated user. It polls the 'SENT' label and emits metadata including sender, recipients, subject, timestamp, and thread ID.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
New Gmail Message Received Trigger
Triggers when a new message is received in Gmail.
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.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
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.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Add call participants
Registers new participants added to a slack call.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
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 Gmail and Slack. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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