About Immigration Solutions
Immigration Solutions (IMS) runs a high-volume outbound sales motion in the United States. Like most sales-led organizations, their ability to reach prospects depends on two things that are largely outside their direct control: answer rates and how mobile carriers perceive their phone numbers.
As outbound volume increased, spam labeling became a growing operational risk. Not because IMS was doing anything unusual for a sales org, but because the calling patterns that come with high-velocity outreach can resemble the signals carriers typically associate with telemarketing traffic.
To reduce that risk, IMS partnered with CloudTalk and Numeracle to put a structured spam remediation process in place across their outbound number pool.
Problem
Spam labeling isn’t a simple on/off issue.
It’s a consequence of how carriers interpret calling behavior over time, at scale.
For IMS, the challenge was to:
- Protect a large pool of outbound numbers from being labeled as spam
- Understand what remediation can realistically improve at scale
- Avoid constant number rotation or reactive replacements
Solving this required visibility into carrier behavior, not just a technical fix.
“At a certain point of volume, spam labeling isn’t an exception. It’s something you have to plan for.”
Evaluation
Proven Deliverability at the Carrier Level
As part of their evaluation, the team also reviewed carrier-level outcomes to understand how effective CloudTalk’s number registration and remediation process would be.
CloudTalk sees consistent patterns across customers using Numeracle:
- Verizon and T-Mobile (together ~70% of the U.S. mobile market) show a 99.7% success rate in preventing persistent spam labeling once numbers are registered and remediated.
- AT&T (the remaining ~30%) shows an approximate 90% success rate, with longer remediation timelines and stricter enforcement thresholds.
These carrier outcomes are based on aggregated CloudTalk user data and are not unique to IMS.
When spam labels still occur they typically follow recognizable patterns:
- Very high outbound call volume
- 9–10 call attempts to the same lead within a single week
- Average call durations around 10 seconds
- Calling behaviors flagged as cold sales or telemarketing
While registration greatly improves reputation outcomes, it does not override aggressive or non-compliant calling strategies.
Solution
Carrier-Recognized Number Registration with Numeracle
As part of their CloudTalk deployment, IMS registered their outbound numbers through Numeracle. This provided:
- Carrier-recognized validation of outbound numbers
- Ongoing monitoring for spam labels
- Structured remediation when labels appeared
- A way to compare outcomes across carriers over time
Rather than treating spam labels as isolated incidents, IMS evaluated results across their full number pool of 424 numbers.
“Once everything was registered and monitored in one place, we could finally see patterns instead of isolated issues.”
Preventing Spam Labels at the Source
Remediation solves the label after it appears. But long-term performance depends on keeping calling patterns “healthy” in the eyes of carriers. This is where CloudTalk’s anti-spam practices come in: we work with customers to adjust the inputs carriers react to.
CloudTalk focuses on several carrier-sensitive levers:
1) Improve answer rates (ASR) using local relevance
Carriers look at historical answer rates on a number. To improve ASR, CloudTalk can route outbound calls through Local Presence Dialing combined with Automatic Outbound Caller ID, using a U.S. number pool so prospects see a familiar or nearby area code.
2) Limit reattempt frequency at the campaign level
A common trigger is over-dialing the same lead. CloudTalk campaign settings help teams control retry logic and spacing, reducing the risk of calling a prospect too frequently by mistake.
3) Reduce negative consumer sentiment (reports, blocks)
Carriers factor in consumer actions like call reporting and blocking. CloudTalk supports tactics that reduce friction, including voicemail drop and follow-up SMS, so teams can move outreach forward without repeatedly ringing the same person.
4) Increase average call duration
Very short calls are a known risk signal in sales-heavy traffic. Voicemail drop can help improve average interaction time and reduce patterns that look like rapid-fire call attempts.
Results
Minimal Spam Labeling Across a Large Number Pool
Across Immigration Solutions’ 424 registered numbers, spam labeling has been limited and operationally manageable.
Rather than persistent labeling across the pool, the pattern is typically intermittent and concentrated in a small rotating subset. At any given time, only 2–3 numbers may display a spam tag. When a number is flagged, the label is usually removed the same day, and in some cases within 2-3 days.
In practice, this means spam labels show up as short-lived carrier events affecting well under 1% of the number inventory at a time, not as long-term reputation damage.
“What mattered most was that the labels didn’t linger. If something came up, it usually cleared before it became a real problem.”
What this looks like day to day:
- A small subset (typically 2–3 numbers) may be flagged at any moment
- Flagged numbers typically return to clean status within hours, and at most within 2-3 days
- The broader number pool remains consistently clean
Takeaway
By registering and monitoring their outbound numbers through CloudTalk and Numeracle, Immigration Solutions has kept spam labeling limited, temporary, and predictable, even under high-volume outbound conditions.
“The goal was never zero flags forever. It was knowing that if something happened, it wouldn’t derail the business.”
More broadly, this case shows how spam remediation works in practice when paired with prevention: clear expectations of carrier behavior and calling-pattern coaching that reduces risk at the source.
