Spam call blocking software
Unknown callers press a key before the call connects. Dialers do not press keys, so they never reach you. Known clients and mobile callers skip the step entirely, and you are never billed for a call that was screened.
Live in 5 minutes · No setup fee · No long-term contract
When half the ringing is nobody
A business phone number attracts telemarketers, robocalls, and silent dialers, and the number they call from changes constantly. Every one of them costs something, in interruptions and often on the bill.
You Pay for Calls You Never Wanted
On any phone service that bills by the minute, a robocall is billable the moment it is answered. An AI receptionist greeting a dialer, or a tracked call connecting to silence, is money spent on a caller who was never going to buy anything.
Blocklists Cannot Catch a Number You Have Never Seen
Most spam now uses neighbor spoofing, where the number changes on every call and matches your own area code. Blocking numbers one at a time works on the repeat offenders and does nothing about first contact, which is most of the volume.
Aggressive Filters Hang Up on Real People
Anything that guesses whether a caller sounds legitimate will eventually be wrong about a customer with a bad connection. A filter that turns away one paying job has already cost more than the spam it stopped.
The Junk Buries the Calls That Matter
When most of the call log is telemarketers, the real inquiry from Tuesday afternoon is somewhere in the middle of it. Reviewing calls stops happening, and the follow-up that would have closed a job never gets made.
What an unknown caller has to do
Turn On Screening for Your Number
One setting on your voice page, and it applies to whichever call mode that number uses. Numbers you buy from Smarfle have it on from the start.
Unknown Callers Are Asked to Press a Key
A caller we do not recognize hears one short sentence and presses a key to continue. Automated dialers place the call and wait for audio, they do not respond to a prompt, so they end there.
Your Customers Go Straight Through
Anyone already in your client list is recognized by their number and never sees the prompt. Callers on mobile numbers skip it too, because that is where nearly all real customer calls come from.
Screened Calls Cost You Nothing
A screened call is logged so you can see it happened, kept out of your default call view, and billed at zero. The same is true of a caller who says nothing at all.
Three screening settings
The Press-to-Continue Gate
The one screen that separates a person from a dialer. Callers we do not recognize hear a single sentence and press a key, and anyone who fails it hears how to reach you another way rather than silence. Nobody is refused outright.
Known Clients and Mobile Callers Are Never Screened
Your existing clients are matched by phone number and connected immediately. Callers on mobile lines skip the prompt as well, and a lookup failure is treated as a known caller on purpose, so a database hiccup can never turn away a real customer.
Caller ID Verification on Every Call
Carriers sign legitimate calls under STIR and SHAKEN, and we record that result on the call. Each call in your log shows whether the number was verified or unverified, so you can see the pattern in your own traffic rather than taking our word for it.
Silent Calls End Themselves
A caller who says nothing for seven seconds after the greeting is disconnected automatically and never billed. This is what catches the dead-air robocalls that answer, wait, and hang up.
One Blocklist for Calls and Texts
Block a number once and it stops ringing and stops texting. Blocking also clears that caller's transcripts and removes the empty contact record they created, so a solicitor leaves nothing behind.
Text-Back Flood Protection
If your number is in a spam burst, automatic text-backs pause instead of firing at a hundred dialers, and the paused calls are not charged. You get one notification rather than one per call.
Spam Stays Countable, Just Out of the Way
Your call log opens on real calls. Spam is filtered out of that view but still counted, so you can see how much you are being hit without reading through it.
Screening Works in Every Call Mode
Plain forwarding, forwarding with call tracking, busy message with text-back, and the AI receptionist all screen the same way. Changing how your calls are handled does not change how they are filtered.
Screened calls, counted
See how screening looks in the call log, with junk separated from the calls that are actually worth your time.
Real Calls
Screened
Billed for Spam
Maria Delgado
Known client, connected immediately, booked Thursday
(321) 555-0148
Unverified caller ID, did not press a key
(321) 555-0192
Answered, silent for seven seconds, ended automatically
Trevor Nunez
Mobile caller, skipped screening, asked for a quote
Screening questions
Will this block my actual customers?
Do I pay for calls that get screened?
Does this stop all spam?
Why block spam numbers as they come in?
What do callers actually hear?
Does screening work if I only forward calls to my cell?
Can I see whether it is working?
What does spam filtering cost?
What screening costs
Included at no extra charge
Spam screening, caller ID verification, the blocklist, and silent-call cutoff come with any Smarfle phone number. Screened, silent, and blocked calls are billed at zero, so filtering spam reduces your bill rather than adding to it.
View all plansWhat else the call log shows
AI Receptionist
Answers, qualifies, and books the calls that get through.
Call Tracking
Forward to your phone with recording, transcript, and a customer record.
Communication History
Every call, text, and email on one customer timeline.
Lead Management
Turn the real calls into tracked leads instead of missed ones.
Smarfle against a blocklist app
See how Smarfle's approach compares with the tools businesses commonly evaluate alongside us.
Ready to try Spam Call Filtering?
Start your 14-day free trial. No credit card required.