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Optimizing Phone Enrichment Costs

Phone number enrichment can cost up to $1 per mobile number, making indiscriminate calling expensive and inefficient. With connection rates typically ranging from 1-5% for cold calls, most phone enrichment spending yields minimal results.

Ivan Kovpak avatar
Written by Ivan Kovpak
Updated over a month ago

The Phone Enrichment Cost Problem

Traditional calling approaches waste resources:

  • High Enrichment Costs: $1 per mobile number adds up quickly across large prospect lists

  • Low Connection Rates: Cold calling typically achieves 1-5% connection rates

  • Poor Qualification: Calling unqualified prospects wastes time and budget

  • Inefficient Resource Allocation: Equal investment in all prospects ignores fit and intent signals

The Smart Calling Strategy

Unstuck Engine enables a three-tier approach to phone outreach:

Tier 1: Warm Calls (Highest ROI)

  • Target: High ICP score (80+) + High persona match + Active intent signals (A/B stage)

  • Connection Rate: 20-25% with phone validation

  • Investment: Full enrichment + validation + premium calling resources

Tier 2: Strategic Cold Calls

  • Target: High ICP score (70+) + Strong persona match + Some intent signals (C stage)

  • Connection Rate: 8-12% with phone validation

  • Investment: Selective enrichment + validation

Tier 3: Nurture First

  • Target: Medium ICP score or low engagement stage (D/E)

  • Strategy: Email/LinkedIn nurture until intent signals emerge

  • Investment: Minimal upfront calling investment

Phone Enrichment and Validation Strategy

After receiving your prioritized list from Unstuck Engine, enrich with phone numbers and validate for dramatically improved connection rates:

Phone Enrichment

Start by enriching your prioritized prospects with mobile numbers:

  • Tip: Use FullEnrich for maximum phone number coverage across multiple data sources

  • Only enrich prospects meeting your calling criteria (ICP β‰₯ 70)

  • Calculate enrichment costs vs. expected ROI before investing

Phone Validation Services

After enrichment, validate phone numbers to boost connection rates:

TitanX (Manual Integration):

  • Connection Rate Improvement: 1-5% β†’ 20-25%

  • Features: Real-time mobile validation, carrier identification, line type detection

  • Note: No direct integrations, but unmatched results for certain audiences

  • Best For: High-value prospect calling campaigns

SureConnect:

  • Connection Rate Improvement: 1-5% β†’ 20-25%

  • Features: Mobile number verification, deliverability scoring

  • Best For: Quality-focused calling campaigns

Implementation Workflows

Clay-Powered Calling Workflow

Step 1: Receive Prioritized Data

Set up Clay webhook to receive Unstuck Engine data:

  • Map icp_score, personas_codes, engagement_stage fields

  • Filter for calling-worthy prospects (ICP β‰₯ 70)

  • Prioritize by engagement stage (A β†’ B β†’ C)

Step 2: Phone Number Enrichment

Add enrichment column in Clay:

  • Use FullEnrich for maximum coverage across data sources

  • Only enrich prospects meeting your calling criteria

  • Calculate enrichment costs vs. expected ROI

Step 3: Phone Validation

Integrate validation services in Clay:

  • Validate mobile numbers for priority prospects

  • Filter out invalid/landline numbers

  • Score deliverability for each validated number

Step 4: Export to Dialer Platform

Export validated prospects with priority scoring and context data to your preferred dialer platform.

CSV-Based Manual Workflow

For teams preferring manual management:

Step 1: Daily Priority Export

Configure Unstuck Engine to export daily CSV with:

  • High-priority calling prospects (ICP 80+, A/B stage)

  • Medium-priority prospects (ICP 70+, C stage)

  • Complete prospect context and intent signals

Step 2: Phone Number Enrichment

  1. Upload priority prospects to FullEnrich for comprehensive phone coverage

  2. Download enriched results with mobile numbers

  3. Calculate enrichment ROI based on prospect priority tiers

Step 3: Phone Validation via TitanX

  1. Upload enriched list to TitanX for validation

  2. Download validated results with deliverability scores

  3. Filter for mobile numbers with high deliverability scores

  4. Prioritize final list by engagement stage and ICP score

Step 4: Dialer Platform Upload

Upload your validated, prioritized prospects to your dialer:

Nooks: Upload with engagement context for personalized openers Orum: Include priority scoring and intent signal timing PhoneBurner: Set up prioritized call queues based on engagement stage Trellus: Configure with persona-specific talk tracks Salesfinity: Upload with account context and timing preferences

Automated n8n Workflow

Build end-to-end calling automation:

Copy

Unstuck Engine Webhook ↓ Filter Node (ICP β‰₯ 70 + Calling Personas) ↓ Phone Enrichment (FullEnrich) ↓ IF Node (Phone Number Found) β”œβ”€ TRUE β†’ Phone Validation (TitanX/SureConnect) β”‚ ↓ β”‚ Filter (Valid Mobile Numbers) β”‚ ↓ β”‚ Prioritize by Engagement Stage β”‚ ↓ β”‚ Send to Dialer Platform └─ FALSE β†’ Route to Email/LinkedIn Sequence

Cost Optimization Strategies

ROI-Based Enrichment

Calculate expected return before enriching:

High-Priority Prospects (A/B stage, ICP 80+):

  • Enrichment cost: $1

  • Validation cost: $0.10

  • Connection rate: 25%

  • Expected meetings: 15%

  • ROI: Positive for deals >$1,000 ACV

Medium-Priority Prospects (C stage, ICP 70+):

  • Enrichment cost: $1

  • Validation cost: $0.10

  • Connection rate: 12%

  • Expected meetings: 8%

  • ROI: Positive for deals >$2,500 ACV

Progressive Investment Strategy

Week 1: High-Intent Only

  • Enrich only A/B stage prospects with FullEnrich

  • Validate all enriched numbers via TitanX

  • Premium dialer time slots for validated numbers

  • Track conversion metrics closely

Week 2: Expand to Medium Intent

  • Add C stage prospects if Week 1 ROI positive

  • Maintain validation for all calling prospects

  • Monitor cost per meeting metrics

Week 3+: Scale Based on Performance

  • Expand to additional ICP tiers if metrics support

  • Optimize calling times based on engagement data

  • Refine prospect scoring based on conversion results

Dialer Platform Integration

Supported Dialer Platforms

Nooks

  • Advanced conversation intelligence

  • Real-time coaching capabilities

  • Best for teams focusing on call quality

Orum

  • Parallel dialing technology

  • High-volume calling optimization

  • Best for SDR teams with volume targets

PhoneBurner

  • Power dialing with CRM integration

  • Automated follow-up sequences

  • Best for solo practitioners and small teams

Trellus

  • AI-powered conversation assistance

  • Real-time research and coaching

  • Best for complex B2B sales cycles

Salesfinity

  • Multi-channel outreach integration

  • Advanced analytics and reporting

  • Best for comprehensive sales engagement

Advanced Optimization Techniques

Time-Based Calling

Use Unstuck Engine's engagement timing data:

  • Call prospects within 2 hours of intent signals when possible

  • Schedule callbacks based on previous LinkedIn activity times

  • Coordinate calling with other marketing touchpoints

Account-Based Calling Coordination

For target accounts with multiple stakeholders:

  • Prioritize decision makers for phone calls

  • Use other channels for champions/influencers initially

  • Coordinate timing across all touchpoints

Geographic Optimization

Optimize calling costs by geography:

  • Higher investment in tier-1 markets

  • Adjusted ICP thresholds for different regions

  • Local number validation for better connection rates

Measuring Phone Enrichment ROI

Key Metrics to Track

Cost Metrics:

  • Phone enrichment cost per prospect

  • Validation cost per valid number

  • Total investment per connected call

  • Cost per meeting booked

Performance Metrics:

  • Connection rate by prospect tier

  • Meeting booking rate by engagement stage

  • Pipeline value per phone investment

  • Sales cycle length for phone-sourced opportunities

Efficiency Metrics:

  • Time to connection by prospect priority

  • Calls required per meeting by tier

  • Conversion rate phone vs. other channels

Expected Results by Implementation

Month 1 Results:

  • 60-80% reduction in wasted phone enrichment spend

  • 300-400% improvement in connection rates

  • 50-70% increase in meetings booked per calling hour

Month 3 Results:

  • 200-300% improvement in phone-sourced pipeline

  • 40-60% reduction in cost per opportunity

  • 25-35% improvement in sales cycle velocity

Best Practices

Resource Allocation

  • Invest maximum resources in A-stage, high-ICP prospects

  • Use FullEnrich for comprehensive phone coverage

  • Always validate numbers through TitanX for highest-priority prospects

Message Personalization

  • Reference specific intent signals in opening

  • Mention recent company activity for warm calling

  • Customize approach based on persona type

Timing Optimization

  • Call within 2 hours of strong intent signals when possible

  • Use engagement history to optimize calling times

  • Coordinate with email and social touches

Data Quality Management

  • Regularly update phone validation services

  • Track and remove consistently invalid numbers

  • Monitor carrier changes and number portability

This strategic approach transforms phone outreach from expensive spray-and-pray to surgical precision, ensuring every dollar spent on phone enrichment targets prospects most likely to connect, engage, and convert into pipeline opportunities.

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