Validate numbers before you spend on SMS and WhatsApp
CampaignHQ validates numbers on secure infrastructure to standardize formats, filter invalid entries, and distinguish mobile vs landline, so routing and deliverability decisions start clean.
- Valid
+91 98765 43210
Mobile · Airtel · IN
- Valid
+1 415 555 0132
Mobile · Verizon · US
- Landline
+91 22 4012 3456
Landline · MTNL · IN
- VoIP
+44 20 7946 0000
VoIP · flagged
- Invalid
+91 00000 00000
Unreachable
Validation tells you whether a number looks deliverable and what kind of line it is. It does not prove the user controls that number. Use OTP or WhatsApp flows when you need proof of possession.
Clean numbers at capture and before every send
Same pattern as email verification: clean data at capture and before large sends, wired into CampaignHQ SMS and WhatsApp workflows.
In the platform
Lists, signup, and journeys
- Validate on import and periodic CRM sync
- Catch fake or malformed signup numbers early
- Segment mobile vs landline before SMS vs voice routes
- Normalize to E.164 for WhatsApp and SMS APIs
Developers
API-first validation
Call validation from your services behind authentication. CampaignHQ exposes APIs suited for signup flows, imports, and messaging pipelines without exposing credentials in the browser.
- Pass PhoneNumber + optional IsoCountryCode
- Returns PhoneType, Carrier, Country, CleansedPhoneNumberE164
- Ideal for microservices and custom signup backends
How validation works
Collect or upload numbers
From forms, imports, or your CRM. Optionally pass ISO country for ambiguous inputs.
Validate server-side
Our backend checks validity, type (mobile/landline/VoIP), and enriches carrier and geography where available.
Use cleansed E.164
Route SMS and WhatsApp sends using standardized numbers and safer audience splits.
+91 98765 43210
Checking number…
Collect or upload
Forms, imports, CRM sync
Validate server-side
Type, carrier, geography
Return cleansed E.164
Standardized for APIs
+919876543210 · Mobile · Valid
Airtel · India · ready to send
What you get from each validation
Valid vs invalid
Classify every number so dead entries never cost you a send.
Line type
Tells mobile, landline, and VoIP apart before you route.
E.164 normalization
Standardizes formatting so SMS and WhatsApp APIs accept it.
Carrier & country
Enriches with carrier and geography metadata where available.
Send-ready
Ideal right before SMS and WhatsApp outreach at scale.
Bulk cleansing
Clean whole lists and keep signup data hygienic over time.
Pricing that fits how you send
Interested in phone validation volume, packaging with SMS and WhatsApp, or enterprise terms? Talk to sales and we will align pricing with how you send and how often you validate.
Validation stays behind your authenticated backend
We never ask end users to embed secrets in the browser. Integrate through CampaignHQ so credentials stay server-side.
Reduce wasted SMS spend
Drop obviously invalid numbers before carrier billing on SMS and WhatsApp.
Faster list hygiene
Automate validation in pipelines instead of manual spreadsheet checks.
Multi-channel ready
Validation sits alongside email, SMS, and WhatsApp in one workflow for outreach and hygiene.
Phone validation FAQ
Common questions about validating and cleansing phone numbers with CampaignHQ.
Still have questions?
No. Validation checks number metadata, formatting, and network signals. It does not prove the user owns the phone. For ownership, use SMS OTP or WhatsApp verification flows.
Contact sales for packaging and volume pricing that fits your workspace, including validation alongside SMS and WhatsApp.
Yes. Use validation in list import pipelines, CRM sync jobs, or before high-volume SMS and WhatsApp campaigns to reduce wasted sends.