Stop spam callers from reaching Isabel

Each inbound call is scored using multiple signals before Isabel answers. Known scam patterns, short-hangup behavior, caller ID verification, and do-not-call listings all contribute to a score that decides how the call is handled.

• Low risk: the call is answered normally.
• Elevated risk: Isabel uses a shorter, guarded greeting and captures less detail.
• High risk: the call is routed to a separate flow that records what the caller says and emails it to you as a spam voicemail.

When a number keeps getting through, add it to the blocklist from the Spam page. Blocked numbers skip Isabel entirely and never count against your usage.

1. Open Calls and go to the Spam section.
2. Add the number in E.164 format, for example +15551234567.
3. Save. Future calls from that number are blocked automatically.

If a call is borderline, Isabel does not silently drop it. The caller is handed off to a spam flow that records a short message. That recording is emailed to you so a real customer never slips through a filter by accident.