Hi @Circu5,
There are typically a few reasons why records are excluded:
- They’re not marketing contacts. You would have to set them as marketing contacts: Set contacts as marketing
- The contacts do not have an opt-in for the subscription type you chose in the settings tab of the marketing email editor. You would have to make sure they have an opt-in: Manage your contacts' messaging subscriptions
- You’ve exceeded your marketing email sending limit. You can check if that’s the case here: Manage your HubSpot subscription
These two are the most likely reasons why the number is lower than expected.
Keep in mind that HubSpot will still exclude contacts who have previously unsubscribed or who have bounced in your portal or in multiple other HubSpot portals. There isn’t any way to work around that in a Starter subscription.
Best regards