Improver Review 2026: B2B Data Coverage, Pricing & SyncGTM Comparison

This Improver review covers what the personal email finder actually delivers in 2026: credit-based plans from $15/month (annual), a LinkedIn-sourced index of double-verified personal emails, and the highest personal email discovery rate in Jan Tegze's independent benchmark. Our rating: 3.9/5.

Improver is a Chrome extension built specifically for one job: finding the personal email address behind a LinkedIn profile. You open a LinkedIn profile, click the Improver tab in your browser, and the tool returns a verified personal email — Gmail, Hotmail, or whichever personal domain the contact uses — if it exists in the index.

That narrowness is both its strength and its ceiling. Improver outranks most tools when the job is specifically personal email discovery from LinkedIn. It falls short the moment you need corporate addresses, phone numbers, prospecting data, or any GTM workflow beyond raw contact retrieval.

This review breaks down the credit pricing math at each tier, the real accuracy and coverage numbers, the key features, and an honest list of where Improver falls short. Then we compare it directly against SyncGTM's waterfall enrichment across 50+ providers — to show where each tool wins.

What Is Improver?

Improver — LinkedIn personal email finder with double-verified data and credit-based pricing from $15/month.

Improver is a B2B contact enrichment tool built exclusively around personal email discovery from LinkedIn. Its core workflow is deliberately simple: install the Chrome extension, open a LinkedIn profile, click the Improver tab, and receive a verified personal email address if one exists in the index.

The data is described as double-verified and continuously updated. Employees at companies including Microsoft, Apple, Intel, Facebook, Accenture, Deloitte, and JP Morgan are reported to use the service — positioning Improver as a tool used in enterprise recruiting and high-volume outreach workflows, not just by small teams.

Improver was built around an independent study by Jan Tegze, a well-known LinkedIn recruiting expert, that evaluated 7 personal email finder tools across 55 LinkedIn profiles. Improver came first in email discovery rate and offered roughly twice the value per credit compared to competitors. The company positions this study as the foundation of its "most valuable tool" claim.

Improver Pricing: Plans, Credits, and What You Actually Pay

Improver runs on credit-based pricing with a free tier of 3 credits per month and no card required. Annual billing is meaningfully cheaper — the Professional plan drops from $40/month to $30/month when paid annually, saving 25%.

The key pricing principle: credits are only consumed when Improver successfully finds a contact. If no personal email is found, you are not charged. Duplicate reveals of the same contact count only once — a fair mechanic for teams enriching overlapping lists.

The real cost math

At $30/month for 150 credits (Professional, annual), Improver charges $0.20 per personal email found. That is competitive for verified personal emails, which are harder to source than corporate addresses and command a premium across most enrichment tools.

The volume caps are where the math tightens. 500 credits per month on the Premium plan means one active SDR or recruiter can exhaust the limit in a few days of prospecting. Unused credits do not roll over and cannot be refunded, so teams with variable usage — heavy one week, light the next — overpay structurally.

Factor in what Improver does not do: no corporate emails, no phones, no signals, no outreach. A team that adds a corporate email finder, a phone enrichment tool, and a sequencing platform alongside Improver quickly spends more than a waterfall enrichment platform that bundles all three.

Improver Review: Data Coverage and Accuracy Tested

Improver's benchmark comes from Jan Tegze's independent study, which tested 7 tools — Improver, Jobjet, RocketReach, Lusha, Swordfish, SignalHire, and one excluded for platform restrictions — across 55 LinkedIn profiles with no publicly available contact information across nine job positions.

The evaluation measured four dimensions: subscription price for 100–200 contacts, credits included per month, price per contact, and personal emails found. Improver ranked first on email discovery and offered approximately twice the credits per dollar compared to competing tools at equivalent price points.

Two caveats are worth flagging. First, the benchmark tested 55 profiles — a small sample that may not represent every industry or geography. Second, the comparison was between personal email finders, not the broader enrichment tool landscape. Against tools like Lusha or Apollo that primarily target corporate addresses, Improver wins on personal email rate; against a waterfall enrichment platform that covers both personal and professional contacts across 50+ providers, the coverage gap runs in the other direction.

Improver's architecture explains the ceiling. It queries one index — sourced from LinkedIn — and returns a result if the profile is in the database. There is no fallback to a second source, no cross-verification against other providers, and no corporate domain lookup. The accuracy on found contacts is high; the question is always how many contacts it cannot find.

Improver Key Features

Improver keeps a deliberately focused feature set around personal email retrieval from LinkedIn. Here is what you actually get.

• Chrome extension one-click email finder. Open a LinkedIn profile, click the Improver tab, and retrieve a double-verified personal email address in seconds. No copy-pasting of names or domains required.
• Improver Match. A free feature that cross-references your existing data against the Improver index to identify which contacts already have personal email records — without consuming credits until you reveal them.
• Bulk enrichment. Upload a CSV of LinkedIn profile URLs and run personal email discovery at scale. Useful for recruiters processing large candidate pipelines or sales teams enriching LinkedIn export lists.
• Data Refresh. Update existing contact records with current positions, companies, and CVs — keeping your database accurate when job changes occur.
• API access. Available on request for teams with 10,000+ lookups per month, enabling direct integration with CRMs and data pipelines. Not self-serve — requires contacting sales.
• Corporate email requirement. Registration requires a corporate email address, which filters out casual or low-intent signups and helps maintain data quality at the platform level.

Improver Pros: What It Does Well

• ✓
  Best personal email discovery rate. #1 across 7 tools in Jan Tegze's independent benchmark on 55 LinkedIn profiles. For the specific job of finding personal emails from LinkedIn, it outperforms Lusha, RocketReach, Swordfish, and SignalHire in this test.
• ✓
  Pay only for results. Credits are charged only when a personal email is successfully found. No result, no charge. Duplicate reveals of the same contact count once. The pricing model aligns the tool's incentive with your outcome.
• ✓
  Lowest price per personal email. At $30/month for 150 credits (Professional, annual), Improver offered approximately twice the credits per dollar versus competitors in the Tegze study — the best unit economics for personal email enrichment at small scale.
• ✓
  Simple, friction-free workflow. Users consistently describe setup as fast — install extension, register, open LinkedIn, click tab. No training required. The Improver Match feature is free and lets you identify which contacts have records before spending any credits.
• ✓
  Personal emails increase reply rates. Personal email addresses bypass corporate spam filters, reach prospects outside business hours, and land in inboxes that are actually checked — which is why recruiters and salespeople specifically need them alongside or instead of corporate addresses.

Improver Cons: Where It Falls Short

• ✕
  LinkedIn-only sourcing. Every lookup requires a LinkedIn profile URL as input — you cannot enrich a list of company names, domains, or names alone. If your prospecting list is not LinkedIn-based, Improver cannot help.
• ✕
  Personal emails only. Improver does not find corporate or work domain emails. For outreach workflows that need professional addresses, you need a separate tool entirely.
• ✕
  No phone numbers. There is no phone enrichment — a significant gap for sales teams running multi-channel outreach across email and mobile.
• ✕
  Very low free tier. Three credits per month is enough to test the product but nothing more. Even the Professional plan at $30/month (annual) covers only 150 contacts — a small team can exhaust it in a day of active prospecting.
• ✕
  Credits expire. Unused credits do not roll over and are non-refundable. Teams with variable monthly usage pay for credits they cannot use.
• ✕
  No GTM stack features. There is no prospecting database to build target lists, no buying signals, no outreach sequences, and no native CRM integrations (API access requires contacting sales and a minimum of 10,000 lookups per month). Improver is a retrieval tool, not a platform.

Improver vs SyncGTM: Waterfall Enrichment Compared

Improver and SyncGTM are designed for different problems. Improver is a specialist that retrieves personal emails from a single LinkedIn-sourced index. SyncGTM runs waterfall enrichment across 50+ data providers in sequence — querying each until a verified contact is found — covering both personal and professional emails, phone numbers, and firmographic data that no single source can deliver alone.

That architecture difference determines coverage. When Improver's index has no record for a LinkedIn profile, the lookup returns nothing. A waterfall falls through to the next provider, then the next — recovering contacts that a one-index tool leaves on the table. That matters most when your list includes non-tech verticals, contacts whose personal email is not in Improver's database, or prospects who need a corporate address for formal B2B outreach.

SyncGTM also goes further than enrichment. It adds waterfall phone finders, lead sourcing from scratch, buying signals (hiring, funding, tech-change, job-change), native CRM sync, and built-in outreach — so one subscription replaces the multi-tool stack that Improver alone requires.

The verdict: Improver is a strong component for one specific job. SyncGTM is a complete GTM system. If you need the highest possible coverage across all contact types — plus signals, sourcing, and outreach — compare the SyncGTM pricing against the cost of adding each missing capability to Improver individually.

Who Should Use Improver?

Improver is the right tool when the job is narrow and the list is LinkedIn-based.

• Recruiters and talent acquisition teams. Improver was built for this use case — sourcing personal emails from LinkedIn profiles to reach candidates through their most-checked inbox rather than a work address monitored by an employer.
• Salespeople doing direct personal outreach. When reply rates on corporate emails are low and the ICP is individuals reachable via personal email, Improver delivers contacts that domain- based tools miss entirely.
• Small teams with low monthly volume. At 150 credits per month on the Professional plan, Improver works well for teams enriching a few hundred contacts per month rather than running high-volume outbound sequences.
• Teams with a LinkedIn-first workflow. If your prospecting starts in LinkedIn Sales Navigator or a LinkedIn export, Improver plugs in cleanly via the Chrome extension or bulk enrichment.

Improver is the wrong choice if your list does not start from LinkedIn URLs, if you need corporate work emails, phone numbers, or firmographic enrichment, or if you want one platform to source, enrich, and act on leads at scale. For those needs, a waterfall platform — or one of the best Improver alternatives — is the better starting point.

Final Verdict: Is Improver Worth It in 2026?

Improver earns 3.9/5. For its stated purpose — finding verified personal emails from LinkedIn profiles — it is accurate, well-priced, and backed by the best independent benchmark in its category. The pay-for-results model is fair, the Improver Match feature adds free pre-screening value, and the Professional plan at $30/month (annual) delivers strong credit-to-dollar value.

The ceiling is scope. Improver does one thing. It requires LinkedIn profile URLs as input, returns only personal emails, offers no phone data, no prospecting, no signals, and no outreach. For recruiters and direct-outreach sales teams who work LinkedIn-first, that scope is exactly right. For GTM teams running multi-channel outbound that needs corporate emails, mobile numbers, buying signals, and CRM sync, Improver alone is not enough — and the cost of adding each missing layer separately quickly exceeds the subscription cost of an all-in-one platform.

If you want one platform to source, enrich across all contact types, monitor buying signals, and run outreach — with higher coverage than any single personal email index — start with SyncGTM instead. It replaces the stack Improver alone cannot. You can also weigh it against the wider field of email enrichment tools before you commit.