What is blacklisting for?

This will allow you to control internal versus external domains that match a specified rule.


This may seem complicated at first glance, but it's not! 

Your company domain is automatically set as your default blacklisting.  You can also choose fields to no sync on objects in your CRM.

If you'd like to add domains, head to Admin > General Settings and add them below. Not all are created equal. Keep out the ones you don't want in Costello.

Email Domain

Keep internal and external separate. This will be especially helpful for appointments and meetings. This section can be found under "Admin >  General Settings > Calendar Settings".

Lead Field

Contact Field 

Account Field

Opportunity Field

These features are really helpful when it comes to a clean and organized calendar. For more on that feature, read our article. 



Did this help answer your question?

thumbs up
thumbs down

Thanks for the feedback! 🙏🏽

Help by drift