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Validate attendee emails from Google Calendar events

Get a quick read on whether event attendee addresses are valid before you use them for follow-up.

Trigger

Calendar Event Sync

Polling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).

Action

Instant Email Verifier

Tool to instantly verify a single email address. Use when you need real-time validation before processing an email.

Why this helps

An incorrect or inactive attendee address can leave important meeting follow-up undelivered.

  • Catch invalid attendee addresses early
  • Reduce bounced follow-up emails
  • Review results without manually checking each address

Setup

Build it in a few focused steps.

  • 1Connect Google Calendar and Clearout once in the Notis portal.
  • 2Create an automation in Automations, New Automation, and give it a name.
  • 3Tell Notis to validate attendee email addresses from synced events with Clearout.
  • 4Pick Calendar Event Sync as the trigger and choose where run reports go.
  • 5Test with one real event and review the run report.

Questions about this workflow

Which event data does this use?

Calendar Event Sync returns full event data, including attendees and metadata. Notis can use the attendee email addresses returned by the trigger.

Does this send email to attendees?

No. The Clearout action checks an email address. The listed action does not send email.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Google Calendar to Clearout. A trigger fires from one place; an action lands in another.

Google Calendar triggers

Clearout actions

Recurring trigger

Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.

TriggerScheduled

Autocomplete Company to Domain

Tool to autocomplete company names to probable domains with confidence scores. Use after obtaining a company name or URL to get suggestions.

ActionInstant

Webhook trigger

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

TriggerInstant

Business Account Verify

Tool to check if an email belongs to a business/work account. Use when validating corporate emails before onboarding.

ActionInstant

Attendee Response Changed

Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.

TriggerPolling

Catch-All Verify

Tool to check if an email domain is catch-all. Use after confirming email validity.

ActionInstant

Event Canceled or Deleted

Triggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp.

TriggerPolling

Verify Disposable Email

Tool to check if an email is from a disposable provider. Use after acquiring an email address.

ActionInstant

Event Starting Soon

Triggers when a calendar event is within a configured number of minutes from starting. Returns event details, time remaining, attendees, and join links when available.

TriggerPolling

Find Domain MX Records

Tool to retrieve MX records for a domain in priority order. Use when you need to find a domain's mail servers (e.g., for email routing setup).

ActionInstant

Calendar Event Changes

**SOON TO BE DEPRECATED** - Use Calendar Event Sync (polling trigger) instead. Real-time webhook trigger for calendar event changes. Returns event metadata only. For full event data, use Calendar Event Sync (polling trigger).

TriggerInstant

Fetch Domain WHOIS Information

Tool to fetch WHOIS record for a domain. Use when you need WHOIS data for a domain.

ActionInstant

Event Created

Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.

TriggerPolling

Bulk Email Finder

Tool to upload a CSV or XLSX contacts file for bulk email finding. Use when you need to find emails for a list of contacts in bulk.

ActionInstant

Calendar Event Sync

Polling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).

TriggerPolling

Cancel Bulk Email Finder Job

Tool to cancel a running bulk email finder job. Use when you need to stop an in-progress list scan before completion.

ActionInstant

Connect any two apps with Notis in the middle.

Google Calendar and Clearout, or any other combination from 1,000+ integrations.

When this happens · Trigger

Do this · Action

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