Call Flow
Spam Call Blocking: stop spam calls before they ring
Block a spam or unwanted number once, in one project or your whole account. It's rejected before it rings your team, and it never reaches your CRM.
14-day free trial · No credit card · Billed per answered call
Calls · Bright PlumbingToday
- 9:31Kim P.Google Ads · 3m 05sAnswered
- 9:19Devon R.Meta Ads · 6m 40sAnswered
- 9:08+1 (555) 014-6620Hangup cause Spam Filter · not sent to HubSpotBlocked
- 8:56+1 (555) 019-8840Organic search · 0m 04sAnswered
- 8:41Maria L.Google Ads · 4m 12sAnswered
Blocked calls stay in the log, so you can see them.
Blocked CallersCall handling
- +1 (555) 014-6620Blocked in all projects: Bright Plumbing, Austin HVAC, Client B
Last blocked call9:08
- Caller
- +1 (555) 014-6620
- Outcome
- Blocked
- Hangup cause
- Spam Filter
- Sent to HubSpot
- No
- Blocked
- 1
- Rang your team
- 4
- Sent to HubSpot
- 4
What is spam call blocking?
Spam call blocking stops calls from numbers you choose before they ring your team. In Nimbata you add a caller ID to your blocked list, for one project or your whole account, and every call from it is rejected. It's logged as Blocked, so you can still see it, but it never rings a phone and isn't sent on to your CRM or ad platforms.
Block a number from the call itself, from your blocked list, or automatically with a workflow when a call is tagged as spam.
How does spam call blocking work?
Block a number once, and its calls stop ringing.
Block the number
Open the call and choose Block, or add the number under Call handling > Blocked Callers. Pick this project or all of them.
1Block
It never rings
The next call from that number is rejected before it reaches anyone on your team.
2Reject
It's logged as Blocked
The call stays in your call log with the outcome Blocked, so you can see it, and it isn't sent to your CRM or ad platforms.
3Log
Spam stays out of your team's day
Every blocked caller, gone from your phones and your tools.
One project or every project
Block a number in the project it called, or across your whole account at once. Blocking everywhere needs access to every project.
Clean up past calls
Delete a number's earlier calls as you block it in a project, so old spam leaves your reports too.
Block anonymous callers
Add anonymous as a caller ID, and calls that hide their number are rejected too.
Block spam automatically
Add the Add to Spam Filter step to a workflow, and a call your rules or AI tag as spam blocks its caller, in the project or your whole account.
Your tools stay clean
Blocked calls aren't sent to your integrations, so robocalls never become leads in your CRM or conversions in your ad platforms.
Share your list
Copy blocked numbers to another project in a few clicks, so a new client starts with the spam you already know.
What reached your team, and what didn't
Real callers ring through. Blocked numbers are rejected and logged, out of everyone's way.
Today's calls, answered and blocked
From one spam call to never again
Block it once and it's handled.
- The first call
A spam call comes in
Your team answers it once, or AI tags it as spam.
- Moments later
The number is blocked
From the call, or by a workflow that adds it to your blocked list.
- Every call after
It never rings again
The number is rejected before it rings and logged as Blocked.
Without blocking vs spam call blocking
Spam costs your team time and fills your tools. Blocking stops both.
| Without blocking | Spam call blocking | |
|---|---|---|
| Spam calls | Ring your team every time | Rejected before they ring |
| Your CRM and ad platforms | Spam arrives as leads and conversions | Blocked calls aren't sent |
| Anonymous callers | Ring through | Can be blocked too |
| Across clients | Each project on its own | One block for every project, or a list to copy |
| Seeing what was blocked | Nothing to see | Logged with the outcome Blocked |
Who uses spam call blocking?
Home services
Keep robocalls off the lines your technicians answer.
Agencies
Block a spam number across every client at once.
Pay-per-call
Stop junk calls before they're sent to a buyer.
Sales teams
Spend every ring on a real lead.
Frequently asked questions
How do I block a spam call in Nimbata?
Open the call and choose Block, or go to Call handling > Blocked Callers and add the number. You can block it in the project it called or in every project in your account.
What happens when a blocked number calls?
The call is rejected before it rings anyone on your team. It's logged in your call log with the outcome Blocked and the hangup cause Spam Filter, and it isn't sent to your integrations.
Do blocked calls show in my reports?
Yes, as Blocked, so you always know what was stopped. Filter by outcome or hangup cause to leave them out, and delete a number's earlier calls when you block it in a project.
Can I block anonymous or hidden numbers?
Yes. Add anonymous as the caller ID, and calls that hide their number are rejected.
Can I block a whole area code or prefix?
The blocked list takes exact numbers. To turn away callers by prefix, add a Caller ID Prefix step to your call flow that hangs up on the prefixes you choose, on the Marketing and Agency plans.
Can spam be blocked automatically?
Yes. A workflow's Add to Spam Filter step blocks the caller, in the project or in every project, for example when a call is tagged as spam.
Can I use the same list for several projects?
Block a number in all projects at once, or select numbers on your blocked list and copy them to another project.
Which plans include spam call blocking?
Every plan. Blocking automatically with a workflow needs a plan with workflows, from Pro.
Still unsure? Talk to a human
Everything you need for call tracking.
Block spam once, and keep every ring for a real customer.
- 14-day free trial, no credit card
- Billed per answered call
- 24/7 expert support
- No long-term contracts