> ## Documentation Index > Fetch the complete documentation index at: https://help.revenuehero.io/llms.txt > Use this file to discover all available pages before exploring further. # Custom Email Blocklist Block people and organizations that shouldn't book meetings with your team. From competitors snooping your product to the repeat bookers who never show up to meetings, protect your reps' slots from being blocked by unwanted meetings. **BEFORE YOU BEGIN** You need admin access to your organization's settings. The blocklist lives under organization-level [Meeting Settings](/settings/settings-overview), so the domains you add apply across your whole account. ## How the blocklist works Think of it as one guest list of people who are turned away, checked on every form submission. * You add entries in **Meeting Settings** as either a full domain (`competitor.com`) or a single address (`repeat-noshow@testing.com`). * When someone submits a form, RevenueHero checks the email they entered against your blocklist. * If it matches, they're disqualified and never shown a scheduler. * This applies everywhere automatically once the entry is saved. Every RevenueHero link and every Relay Quick Book (magic slots) honors the list. There is no per-form or per-link switch to flip. ## Add entries to your blocklist ### Step 1: Open Meeting Settings In the left sidebar, click **Settings → Meeting Settings**, then scroll to the **Custom Email Blocklist** section near the bottom of the page. Email Blocklist Before you add anything, this section reads **No domains blocked yet**. That is your starting point. ### Step 2: Add a domain or address Click **Add Domains**, then enter what you want to block. You have two levels of precision: * **A full domain**, like `acme-competitor.com`. This blocks every address at that company. Use it for competitors and known spam sources, where you want the whole organization shut out, not one inbox. * **A single address**, like `serial-rescheduler@gmail.com`. This blocks one person while leaving everyone else at that domain free to book. Use it for an individual time-waster on a shared consumer domain like Gmail or Outlook, where blocking the whole domain would also block real prospects. Add To Blocklist Blocking at the domain level is the cleaner move for competitors. Teams tell us they would rather add `competitor.com` once than chase each new rep who signs up from a fresh alias. One domain entry covers everyone who works there, today and later. ### Step 3: Save Save your entries. The block is live immediately, across every link and Relay Quick Book in your account. There is nothing to enable on individual forms. ## What matching looks like A domain entry matches anyone whose email ends in that domain. An address entry matches only that exact email. So `acme.com` turns away `jane@acme.com` and `sales@acme.com` alike, while `jane@acme.com` turns away only Jane. The blocklist stops **new** submissions. It does not cancel meetings that were already booked before you added an entry. If a blocked address already has a meeting on the calendar, cancel or reassign it from your [Meetings](/meetings) view. Adding the entry only prevents the next attempt. *** Your blocklist is set. The people you never wanted on your calendar are turned away before they can book, and your reps get their time back. 🎉🎉🎉 Filter spam and invalid emails at submission with real-time email validation, on top of your blocklist. Connect each form field, including the email field the blocklist checks, to your router. Route the leads you keep to the right rep, now that rules no longer carry your blocking logic. Control CRM sync, base assets, and themes across your booking links.