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You know the feeling. You import a list of 5,000 leads, fire up your calling campaign, and then watch your connect rate tank because half the phone numbers are garbage.
"CALL ME", "555-1234", "N/A", "unknown@email.com" in the phone field (yes, really), strings of random numbers that aren't phone numbers at all.
HubSpot doesn't tell you which numbers are actually phone numbers vs. which ones are just... text someone typed in a field. Until now.
Here's what happens when you import contact lists or collect data through forms:
- People enter "N/A" or "none" instead of leaving blank
- Typos create impossible number lengths
- International numbers get mangled without country codes
- Legacy data migrations bring decades of formatting chaos
- Web scrapers grab whatever text was in the phone field
The result means your CRM is full of "phone numbers" that aren't actually phone numbers. And HubSpot's native formatter will happily format "12345" into something that looks legit but obviously isn't callable.
We just shipped a new feature in Clean Dial that solves this automatically.
When you run contacts through our Format Phone Number or HLR Lookup workflow actions, we now set a property called Phone Syntax Valid on each contact record.
- true = This is actually a parseable phone number with valid structure
- false = This is garbage data that can't be parsed as a phone number
Simple as that.
1. Stop Wasting HLR Lookup Credits
Phone live lookup costs money. Why pay to verfiy "CALL-ME-NOW" or "555-FAKE"? Use Phone Syntax Valid to filter your lists before you run expensive carrier lookups.
2. Clean Up Imported Lists Fast
Just imported 10,000 trade show leads? Filter by Phone Syntax Valid = false and instantly see every contact with unusable phone data. Fix them, flag them, or route them to a cleanup workflow.
3. Catch Data Entry Mistakes Immediately
Build a workflow that fires when a new contact has Phone Syntax Valid = false. Your ops team gets notified about bad data before it sits in your CRM for months.
4. Measure Data Quality by Source
Which marketing channels deliver clean phone data vs. garbage? Build a report comparing Phone Syntax Valid rates across lead sources. Suddenly you know which campaigns need better form validation.
5. Gate Your Sales Workflows
Why route leads to SDRs if the phone number is "testing123"? Add Phone Syntax Valid as a workflow condition and only pass through contacts with real phone numbers.
No setup required (seriously!)
The Phone Syntax Valid property gets created automatically when you install Clean Dial and updates automatically whenever contacts flow through either of our workflow actions.
To see it on contact records:
1. Go to any contact
2. Click Actions > Customize Properties
3. Search "Phone Syntax Valid" under Clean Dial
4. Add it to your layout
To use it in workflows:
1. Add a branch condition
2. Select "Phone Syntax Valid" property
3. Filter by equals true or false
Let's say you import a trade show list with 5,000 contacts.
Here's the smart workflow:
1. Enrollment trigger:
Contact added to "Trade Show Import Jan 2026" list
2. Action 1:
Clean Dial > Syntax Phone Number (free, sets Phone Syntax Valid)
3. Branch:
If Phone Syntax Valid = true > continue.
If false → send to "Data Cleanup" list
4. Action 2:
Clean Dial > HLR lookup (for contacts with valid Syntax)
5. Branch:
If Phone live = true > assign to SDR.
If false > send to "Re-enrichment" list
Result: Your SDRs only get contacts with real, working phone numbers. Bad data gets automatically routed for cleanup. No manual review required.
Phone Syntax Valid is live now for all Clean Dial users. Just run contacts through a Syntax or HLR lookup action and the property updates automatically.
If you're not using Clean Dial yet, install it here - the Format Phone Number action is free and unlimited, so you can start tracking phone syntax quality today at no cost.
Questions? Hit us up at contact@daeda.tech.
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