8 Best Proofy Alternatives for B2B Enrichment in 2026

SyncGTM is a B2B prospecting platform built around waterfall enrichment — querying 50+ data providers in sequence until verified contact data is found. Where Proofy validates a contact list you supply, SyncGTM builds and verifies a prospect list from scratch: verified email, direct dial, LinkedIn, and 76+ firmographic and technographic data points in one pass from a target account or company name.

The key distinction for B2B outbound teams is that verification is embedded in the enrichment output. Every email SyncGTM returns has been cross-referenced across multiple providers before delivery — making a separate downstream verification step redundant. You do not pay per-credit to validate a list you built elsewhere; verified deliverability is the baseline on every new contact SyncGTM finds.

On catch-all domains — where Proofy flags addresses as "risky" without resolution — SyncGTM cross-references across providers to recover a meaningful share of those addresses as confirmed deliverable. Internal benchmarks show waterfall enrichment across 50+ providers delivers 20–40% higher contact coverage than any single data source. For the full breakdown of how waterfall enrichment works, see our waterfall enrichment guide.

SyncGTM also covers the entire workflow Proofy leaves open. Buying signal detection surfaces in-market accounts before competitors reach them. Native CRM sync — HubSpot, Salesforce, Pipedrive, Attio, Zoho — routes enriched leads without Zapier middleware. Built-in outreach sequencing closes the loop without a third tool.

ZeroBounce is the most direct Proofy replacement for teams that want deeper email verification with better technical coverage. Both tools accept bulk email lists and return deliverability status, but ZeroBounce adds layers Proofy lacks: spam-trap detection across 30+ networks and AI scoring on catch-all (accept-all) domains at the individual address level.

Proofy classifies emails as valid, invalid, risky, disposable, catch-all, or role-based. ZeroBounce extends this with its AI catch-all scoring system, which analyzes accept-all domains at the individual address level rather than flagging the entire domain as uncertain. On enterprise B2B lists where catch-all configurations are common, this recovers a meaningful share of valid contacts that Proofy classifies without resolution.

ZeroBounce also includes a domain-based email finder and appends basic activity data — engagement signals alongside deliverability status. For teams that want both list cleaning and basic contact discovery in one tool, that goes further than Proofy's pure validation output. For a full benchmark, see our ZeroBounce review 2026.

NeverBounce is a developer-first email verification platform that competes directly with Proofy on per-email pricing while offering substantially wider integration coverage. Pay-as-you-go starts at $0.003/email — competitive with Proofy's $0.0029–$0.002/email mid-tier range and backed by ZoomInfo's enterprise infrastructure.

NeverBounce's real-time API validates addresses at the point of form entry or CRM import — not only as a batch job. The Sync feature re-verifies lists on a schedule automatically, giving teams continuous list hygiene without manual re-uploads. For teams on Proofy who are re-uploading lists periodically, Sync eliminates that workflow entirely.

NeverBounce connects natively to 80+ platforms — broader than Proofy's integration roster. For teams that manage contacts across Mailchimp, HubSpot, Marketo, or Salesforce, native sync removes the CSV-export-and-reimport step that Proofy requires. For a full analysis, see our NeverBounce review 2026.

Bouncer is a GDPR-compliant email verification platform trusted by over 2,000 companies across 6 continents. It is the strongest Proofy alternative for European B2B teams where data compliance is a hard requirement — Bouncer is SOC 2 Type II certified and built with GDPR as a design principle. Proofy notes compliance but without a published SOC 2 Type II certification, which matters to enterprise procurement teams.

Bouncer's standout feature is its toxicity check layer. Beyond standard syntax and SMTP validation, Bouncer flags addresses that historically generate complaints, spam traps, or abuse reports — a reputation signal that gives teams advance warning before they damage sender score. It also includes a Bounce Estimate tool that predicts list-level bounce rate before sending.

Catch-all resolution is more nuanced than Proofy's approach. Bouncer assigns each catch-all address a deliverability probability rather than simply flagging the domain as risky and stopping there. Pricing starts at $0.0025/email — no subscription required, no credit expiry, directly comparable to Proofy's model. For a broader look at GDPR-compliant verification options, see our Bouncer review 2026.

Hunter.io is an email finder and verifier used by 4 million+ professionals. It solves the core gap Proofy leaves open: finding email addresses before verifying them. Hunter's Domain Search returns all email addresses associated with a company domain, the Email Finder constructs and verifies individual addresses from a name and company, and the Email Verifier validates lists you upload — the same workflow Proofy handles, bundled into one tool.

The Confidence Score Hunter assigns to each found email reflects both format pattern matching and real-time verification. Addresses returned with a confidence score above 90% are treated as reliably deliverable without needing a separate Proofy pass. For teams currently using Hunter to find contacts and then re-verifying in Proofy, switching to Hunter alone eliminates the duplicate step.

Hunter also includes outreach campaigns — email sequences with tracking, scheduling, and reply detection — inside the same subscription. That is four functions Proofy does not cover: contact finding, enrichment, sequence management, and engagement analytics. For Hunter's pricing and coverage detail, see our Hunter.io alternatives guide.

Prospeo is a B2B contact finder that returns verified email addresses, mobile numbers, and LinkedIn-enriched profiles in one query. It is the strongest Proofy alternative for SDRs who need verified contacts directly from LinkedIn Sales Navigator — Prospeo exports Sales Navigator lists and enriches each contact with verified email, mobile number, and direct dial, outputting contacts that are already verified and enriched without a separate Proofy pass.

Prospeo claims 98% email accuracy — matching or exceeding Proofy's 99%+ accuracy claim — with the key advantage that Prospeo's accuracy figure covers found-and-verified emails, not just validation of pre-supplied addresses. The mobile number coverage is a meaningful differentiator: Proofy does not offer phone lookup, while Prospeo surfaces verified mobile numbers for a portion of contacts alongside email.

Prospeo also offers a Chrome extension for in-browser contact capture from LinkedIn profiles, a domain search for batch email finding from company names, and a bulk CSV enrichment upload. The verification is built into the output — no secondary Proofy step required. For a detailed comparison, see our Prospeo alternatives guide.

Snov.io is the best all-in-one Proofy alternative on a budget. It combines email finding, verification, drip campaign sequencing, and a lightweight CRM in one subscription starting at $30/mo — covering four functions Proofy does not touch.

The Email Verifier inside Snov.io performs the same multi-step validation Proofy does — syntax check, MX record lookup, catch-all detection, SMTP handshake — but the verification is available as part of any paid plan rather than a separate per-credit charge. Teams paying Proofy for ongoing list cleaning can often cover that need inside a Snov.io plan that already includes contact finding and sequencing.

Snov.io's email finder uses both domain search (returning all emails at a company) and person-level search (constructing and verifying an email from name and company). The Chrome extension captures contacts from LinkedIn, company websites, and Google results with one click. For SDRs who currently move between a list builder, Proofy, and an email sender, Snov.io consolidates all three into one tool. For a deeper look, see our Snov.io alternatives guide.

FullEnrich is a dedicated waterfall enrichment platform — an orchestration layer that routes contact records through 15+ external data providers in a defined cascade and returns the first verified result found. It is the best Proofy alternative for teams whose primary pain point is hit rate, not just validation accuracy: where Proofy validates what you supply, FullEnrich finds what you are missing.

FullEnrich achieves 70–85% hit rates on US enterprise contacts and 50–60% on APAC and LATAM markets. For a list where Proofy might return 40% valid, 20% invalid, and 40% uncertain or catch-all, FullEnrich can often recover verified contact data for a significant share of those uncertain records by querying alternative providers. That recovery directly translates to more reachable contacts per list.

FullEnrich also returns verified phone numbers alongside emails, including mobile numbers — a data point Proofy does not provide. The platform integrates with HubSpot, Salesforce, and Clay, and supports CSV bulk uploads. It earns a 4.8/5 on G2 from 167 reviews, making it the highest-rated waterfall enrichment specialist in the category. For a full breakdown, see our FullEnrich review 2026.