For YouMail, an unsupported carrier does not offer or support Conditional Call Forwarding (CCF). This feature lets you forward your missed calls to YouMail's voicemail system for handling. While most major carriers support this feature, they may limit its availability to specific plan tiers.
If you aren't sure whether your provider supports CCF, it's best to contact them directly to find out.
What if my carrier doesn't support CCF?
While we can’t speak on behalf of your carrier, chances are they don’t offer CCF to cut costs for themselves. For more information, we recommend contacting your carrier directly to find out why they don’t offer CCF and request that they add support for it. Carriers tend to cooperate once they hear directly from enough of their customers.