Validate signup emails from an external flow
Check sign-up addresses as they enter your process, then see the result where your team receives automation reports.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Email Validation
Tool to validate whether an email address is real and deliverable. use after collecting an email address to confirm deliverability.
Why this helps
A signup flow captures an address, but checking it depends on a separate manual export or follow-up task.
- Add validation to an external signup process using a webhook trigger.
- Reduce manual exports and one-off address checks.
- Route results to a channel your team already reviews.
Setup
Build it in a few focused steps.
- 1Connect Abstract to Notis once in the portal and prepare the external system to send an HTTP request to a Notis webhook.
- 2Create an automation in the portal and choose an incoming webhook trigger.
- 3Use one instruction: validate the signup email included in each webhook request with Abstract and report the result without contacting the address.
- 4Choose a channel for run reports and provide the webhook details to the external system.
- 5Test with one real signup example.
Questions about this workflow
Does the webhook trigger come from Slack?
No. This workflow uses a Notis webhook to start the check when an external system sends a request.
Will it send confirmation to the signup address?
No. It validates the address and reports the result.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Abstract. A trigger fires from one place; an action lands in another.
Slack triggers
Abstract actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Validate IBAN
Tool to validate the format and country code of an iban number. use after collecting an iban to ensure it is correctly formatted.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Email reputation
Tool to enrich an email address with reputation and risk scoring data. use when you need to assess an address's deliverability and risk before outreach. use after confirming your api key is valid.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Email Validation
Tool to validate whether an email address is real and deliverable. use after collecting an email address to confirm deliverability.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Abstract, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
Save your first hour today.
7-day trial of any paid plan, with 20$ of usage included.
No card. Works with personal or business Abstract.