Updating block lists from lists

With OutboundSync, you can designate any HubSpot list as a blocklist. Blocklists or exclusion lists help ensure that cold emails are not sent to existing customers, competitors, open deals, or contacts on Do Not Contact lists.

Creating your list in HubSpot

This method allows OutboundSync to identify emails associated with each contact in your selected list and exclude it from future outbound email.  This also works both at the individual contact level or at the company domain level. 

If contacts have multiple emails in HubSpot, OutboundSync will block all associated emails in their contact record by default.

If you don’t have a blocklist built yet, let's create one now. Otherwise, skip ahead.

Need inspiration? Popular examples include lists for newsletter subscribers, open deals, and active clients.

Build a new list in HubSpot by going to Contacts > Lists.

Once there, click the Create List button to start creating a list.

For this you can either create a list that is Contact-based or Company Based. 

After creating a list with the desired criteria to add contacts or companies to an exclusion list, you can use it in OutboundSync for blocking.

Pulling your block list into OutboundSync

Now that you have created your list in your CRM, we need to pull that list into OutboundSync to start dynamically updating it in your Sales Engagement Platform. For this, we'll need to return to OutboundSync.

Navigate to OutboundSync block lists

Now, go to the OutboundSync app and go to the  Block lists  tab on the left.

Select your list

Search for the block list that you created. It can be either a contact list or company list in HubSpot.

Select Sales Engagement Platform API Key

Select the API key for the Sales Engagement Platform that you want to send to the block list. If you want to block this list on multiple platforms, create multiple lists. 

Select the type of blocking

OutboundSync supports two types of blocking. You can block by address or by domain with the Type of Blocking.

Address (Individual Email Address)

Blocks each email associated with a contact in Hubspot individually and adds it to the blocklist in your Sales Engagement Platform.

Example: Blocking john@example.com doesn’t block all emails ending in @example; only John's email is blocked.

Domain (Every Email Address)

Blocks all emails associated with a contact’s domain and adds the domain to the blocklist in Smartlead.

If a contact had multiple email addresses, every domain would be blocked.

If you want to block these domains manually in your Sales Engagement Platform, download this CSV and import it directly. This would block you from emailing personal email addresses.

Select clients (Optional)

If you are using a Sales Engagement Platform that has specific client IDs like Smartlead, this is the step where you will select that Client ID to match the blocklist to that client. Others use dedicated workspaces where this will not be relevant.

Start blocking

Next, click Start Blocking (6). You will see your blocklist appear in the table.