Proofy vs SalesStack: Data Enrichment Tool vs Sales Engagement Platform Comparison

Proofy vs SalesStack: Data Enrichment Tool vs Sales Engagement Platform Comparison

Proofy is a data enrichment tool; SalesStack is a sales engagement platform. Whether you need one, the other, or both depends on which part of the workflow you are buying for: B2B lead data and contact enrichment on one side, multi-channel sales outreach and engagement tracking on the other. This guide lays out what each vendor publishes.

The Quick Answer

Proofy is a data enrichment tool for B2B lead data and contact enrichment; SalesStack is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, Proofy lists bulk email verification and single verification in real time, and SalesStack lists lead scoring and cold email outreach.

Proofy offers a lower entry point at $5/mo compared to SalesStack at $1970/mo.

If your priority is finding accurate contact data for target accounts, Proofy is the one built for it; for coordinating outreach across email, phone, and social channels, that is SalesStack. Many teams run one of each.

Understanding the Core Difference

Proofy is Proofy is an email verification service for bulk list cleaning and real-time single verification through an API, with SMTP, syntax, domain, disposable and accept-all detection. Credits are sold pay-as-you-go or by subscription, never expire, and unknown results are not charged.

SalesStack is Sales engagement and sales automation platform (formerly SendBuzz) that combines a B2B lead database with 40+ filters, cold email campaigns, AI calling, forms, funnels, calendars and deal management in one sales OS for SMBs.

The two platforms take different approaches to solving the same core challenge.

Pricing Comparison

Usage-basedProofy entry plan

Trial pack

$1970/yrSalesStack entry plan

Grow

Proofy Pricing (as of September 2026)

Source: Proofy Pricing

SalesStack Pricing (as of September 2026)

Source: SalesStack Pricing

Pricing Analysis

Proofy is more affordable at the entry level ($5/mo vs $1970/mo). For teams with tight budgets or those just getting started with B2B lead data and contact enrichment and multi-channel sales outreach and engagement tracking, this price difference matters.

Proofy offers 4 pricing tiers compared to SalesStack's 3, giving you more granularity as you scale.

Features Breakdown

Proofy lists

• Bulk email verification
• Single verification in real time
• Email verifier API
• Duplicate email remover
• ISP detection
• Disposable and temporary detection
• and 4 more listed below

SalesStack lists

• Lead Scoring
• Cold Email Outreach
• Sales Engagement
• Sales Funnels
• AI Calling
• Custom Forms
• and 4 more listed below

Proofy Key Features

• Bulk email verification
• Single verification in real time
• Email verifier API
• Duplicate email remover
• ISP detection
• Disposable and temporary detection
• Accept-all detection
• Syntax validation
• SMTP verification
• Mailbox full detection

SalesStack Key Features

• Lead Scoring
• Cold Email Outreach
• Sales Engagement
• Sales Funnels
• AI Calling
• Custom Forms
• Multi-Channel Outreach
• Calendar
• Calls and Tasks
• Team Management

The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.

Listed only by Proofy

• Bulk email verification
• Single verification in real time
• Email verifier API
• Duplicate email remover
• ISP detection
• Disposable and temporary detection
• Accept-all detection
• Syntax validation
• SMTP verification
• Mailbox full detection

Listed only by SalesStack

• Lead Scoring
• Cold Email Outreach
• Sales Engagement
• Sales Funnels
• AI Calling
• Custom Forms
• Multi-Channel Outreach
• Calendar
• Calls and Tasks
• Team Management

Integration Ecosystem

Proofy Integrations

Proofy connects with: .

SalesStack Integrations

SalesStack connects with: .

Use Case Recommendations

Best Fit for Proofy

• Budget-conscious teams looking for an affordable data enrichment tool
• Enterprise buyers who prefer custom pricing and dedicated support
• Revenue operations teams building targeted prospect lists
• Marketing teams enriching CRM data for segmentation

Best Fit for SalesStack

• Mid-market to enterprise teams with established multi-channel sales outreach and engagement tracking budgets
• SDR teams running multi-channel outreach sequences
• Sales managers tracking team engagement metrics
• Revenue teams coordinating email, phone, and social touches

Feature Comparison Summary

Getting Started Checklist

1. Define your B2B lead data and contact enrichment and multi-channel sales outreach and engagement tracking requirements and monthly budget
2. Estimate your expected data credits or contact lookups and sequences and engagement actions to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. Evaluate the onboarding experience and support quality

Final Thoughts

Proofy serves the B2B lead data and contact enrichment side of an outbound stack and SalesStack the multi-channel sales outreach and engagement tracking side. Proofy offers a more accessible entry point at $5/mo, while SalesStack starts at $1970/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.

Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.

Pricing and features verified as of September 2026. Visit Proofy and SalesStack for current information.