HubSpot
Phone Number

5 HubSpot Custom Properties to Revolutionize Your Phone Data Management

In the world of sales and marketing, your CRM is only as powerful as the data inside it. For teams relying on HubSpot, "data decay" is a constant battle, especially when it comes to phone numbers.

If your sales reps are wasting hours dialing disconnected lines or struggling with inconsistent formatting, you don’t just have a productivity problem; you have a data structure problem.

To solve this, Clean Dial introduces five essential custom properties to your HubSpot contact records.

Here’s how they transform your outreach from guesswork into a high-precision machine.

1. Phone Validated: The "Green Light" for Your Sales Team

The biggest drain on sales morale is the "dead air" of a non-existent number. Most CRMs treat every entered number the same, but they aren't.

By using a Boolean (True/False) property, Clean Dial provides instant visibility into which contacts are actually reachable. This "Phone Validated" status acts as a green light, ensuring your team only spends time on active leads. No more manual testing, just high-velocity dialing.

2. Last Phone Validation: Fighting Data Decay

Phone numbers change, businesses move, and data expires. A number that was valid six months ago might be a dead end today.

The Last Phone Validation timestamp allows you to track exactly when a number was last verified. This is critical for HubSpot data hygiene; it lets you create "re-validation" workflows (see Clean Dial's validation action) to refresh old data before a major outreach campaign, keeping your bounce rates low and your deliverability high.

3. Formatted Phone Numbers: Powering Your Integrations

Inconsistent formatting (e.g., (555) 123-4567 vs. +15551234567) is the leading cause of failed CRM integrations. Whether you’re using click-to-dial tools, SMS platforms, or API connections, they all require specific formats to function.

Clean Dial automatically saves formatted numbers directly to your contact records with options of five distinct styles: E.164, International, National, Digits Only, and RFC3699. This ensures that your SMS tools and dialers work perfectly every single time, regardless of how the data was originally entered.

4. Phone Change Tracking: Real-Time Data Integrity

Data entry is a team sport. When a sales rep updates a phone number during a call, you need to know about it immediately to ensure that the new data is as clean as the old.

Our Automatic Phone Change Tracking property timestamps the exact moment a number is modified in HubSpot. This helps RevOps teams maintain 100% data integrity by automatically triggering re-validation workflows the second a change is detected, keeping your database fresh without any manual effort.

5. Phone Quality Filtering: Catching Errors at the Source

Messy imports and data entry mistakes happen. The key is catching them before they cause problems in your sequences or automated workflows.

Clean Dial saves a property indicating whether a number is properly formatted according to your standards. You can use this to create "Data Quality" dashboards, filter out bad numbers from your marketing lists, or segment your database by phone quality to prioritize your highest-value prospects.

Clean Data, Faster Sales

Managing HubSpot custom properties isn't only about organization, it’s about helping your team to work smarter.

By automating your phone validation and formatting, you remove the friction that slows down your sales cycle.

Install Clean Dial here.

Written by
Tikita Tolley
  -  
January 8, 2026