Infos B4BInfos B4B
Service

Email Appending

Match your existing contacts against 86M+ verified B2B profiles to add deliverable business email addresses. Typical match rates of 40-70% with 95%+ deliverability guaranteed.

Match incomplete contacts against our 86M-record database to append verified, deliverable email addresses.

Your CRM is full of contacts with names, companies, and phone numbers — but no email address. Maybe they came from a trade show, a purchased list, or a partner referral. Without a verified email, those contacts sit idle, invisible to your email campaigns and nurture sequences. Email appending matches your existing contacts against our database of 86 million verified B2B profiles, returning deliverable business email addresses that unlock outreach to contacts you already know but couldn't reach.

Capabilities included

  • Verified at append
  • 95% inbox rate
  • Match-back reporting
Why it matters

Why email appending matters

Poor data quality silently undermines every campaign, forecast, and decision your revenue team makes.

Your database is full of contacts missing email addresses — leads from trade shows, imported lists, CRM records with only phone numbers. Every missing email is a missed opportunity. Email appending fills those gaps with verified, deliverable business email addresses, unlocking contacts that were previously unreachable through your primary outbound channel.

Revenue impact

Bad data costs B2B companies 15-25% of revenue through wasted effort and missed opportunities.

Reputation risk

High bounce rates damage sender reputation, pushing future campaigns into spam folders permanently.

Wasted SDR hours

Reps spend up to 30% of their time researching, cleaning, and correcting contact data manually.

Compliance exposure

Outdated suppression lists and missing opt-outs create regulatory liability under GDPR and CAN-SPAM.

Pipeline accuracy

Inaccurate contact data skews pipeline forecasts and leads to missed quota targets quarter after quarter.

CRM bloat

Duplicate and stale records inflate your CRM seat costs and make reporting unreliable across every team.

Key features

Key features of our email appending

Every capability listed below is included as standard — no add-on fees, no tiered access.

/01

Matching against 86M+ verified B2B contacts

Included in every email appending engagement with no additional configuration required.

/02

Multi-field matching (name, company, title, phone)

Included in every email appending engagement with no additional configuration required.

/03

SMTP verification on every appended email

Included in every email appending engagement with no additional configuration required.

/04

Business-only addresses — no personal accounts

Included in every email appending engagement with no additional configuration required.

/05

Provenance tagging for compliance documentation

Included in every email appending engagement with no additional configuration required.

/06

95%+ deliverability guarantee on appended emails

Included in every email appending engagement with no additional configuration required.

Who benefits

Who can benefit?

Our email appending service is built for teams that take data quality seriously.

Whether you're a two-person SDR team or an enterprise RevOps organization managing millions of records, our service scales to your needs and integrates with your existing tools.

3,000+Active teams
32Industries served
01

Sales teams with incomplete CRM records

02

Event marketers with badge-scan lists lacking emails

03

Companies importing partner or reseller contact lists

04

Teams running direct mail that want to add email outreach

05

Organizations with legacy databases needing modernization

By the numbers

Results you can measure

These are real metrics from active client engagements — not projections or industry averages. We publish what we can prove.

40-70%
/01 · Typical match rate

Match rates vary by input quality — the more data points you provide per contact, the higher the match.

95%+
/02 · Deliverability on appended emails

Every appended address is SMTP-verified before delivery. Bounces within 30 days are replaced free.

2.4x
/03 · Increase in reachable contacts

Clients typically more than double their emailable universe after a single appending project.

Real-world applications

How teams use email appending

Three common scenarios where this service drives measurable results.

/01

Trade-show lead activation

Badge scans capture name and company but rarely include email. We match attendee records against our database to add verified business emails so your follow-up campaign launches within days of the event.

/02

Direct-mail-to-email bridge

Running a postal campaign? Append emails to the same list so recipients get a coordinated digital follow-up — doubling touch points without doubling your prospecting effort.

/03

Legacy database revival

Inherited a database of 50,000 contacts from an acquisition with no emails? We match, verify, and deliver fresh email addresses so those dormant contacts enter your active pipeline.

Delivery process

How we deliver email appending

A straightforward, repeatable process from brief to delivery.

Every engagement follows our proven four-step workflow. Your dedicated data strategist manages the process end-to-end, keeping you informed at each stage and ensuring the final deliverable meets your specifications.

Our guarantees

  • Dedicated strategist assigned to your project
  • Free replacement for any record that bounces within 30 days
  • Delivery in CSV, XLSX, or direct CRM push
  • No long-term contracts — cancel anytime
01

Upload your contact list

Send your records with whatever fields you have — name, company, title, phone, or any combination. We accept CSV, XLSX, JSON, or direct CRM exports.

02

Cross-reference matching

Our matching engine compares each contact against 86M+ verified B2B profiles using multi-field fuzzy matching to maximize hit rates without sacrificing accuracy.

03

SMTP verification

Every matched email address is SMTP-verified in real time and tagged with sourcing provenance documentation for your compliance records.

04

Campaign-ready delivery

Receive your enriched list within 48-72 hours, formatted for direct import into your CRM, sequencer, or marketing automation platform.

Security & compliance

Your data is protected

Enterprise-grade security at every stage of the data lifecycle — from ingestion through processing to delivery and deletion.

SOC 2 infrastructure

All data is processed in SOC 2-compliant environments with end-to-end TLS encryption in transit and AES-256 at rest.

GDPR & CAN-SPAM

Every engagement includes compliance documentation. We exclude non-compliant records and honor suppression requests within 24 hours.

NDA & DPA on request

We sign non-disclosure and data processing agreements before any data transfer. Your records are never shared with third parties.

30-day data deletion

All client data is permanently deleted from our systems within 30 days of project completion. Expedited deletion is available on request.

Industries we serve

Trusted across 32 verticals

Our email appending service is used by revenue teams in every major B2B vertical. Here are the industries we serve most frequently.

01
Healthcare & Life Sciences
02
Technology & SaaS
03
Financial Services
04
Manufacturing & Industrial
05
Professional Services
06
Education & EdTech
07
Real Estate & Construction
08
Telecommunications

Plus 24 additional verticals including energy, logistics, government, hospitality, and more. Contact us for industry-specific samples.

How it works

Four steps. Seventy-two hours.

Every email appending engagement runs through the same disciplined pipeline — from the first conversation to a synced, verified list in your sequencer.

/01

Brief

A strategist scopes your ideal-customer profile, fields, geography, and the timeline you're working against.

/02

Curate

We pull from our 86M-record graph and route every match through a four-stage human + machine verification.

/03

Enrich

Missing fields are filled — emails validated, phones live-tested, titles confirmed against LinkedIn signals.

/04

Iterate

We sync the cleaned set into your CRM or sequencer, then refine each future run from your campaign signals.

What to expect

Outcomes you can measure.

These are the medians across our active book of business — grounded in real campaigns, not pitch-deck projections.

95%
/01 · Inbox placement

Average across 12 months of active client campaigns — measured, not estimated.

0%
/02 · Hard bounce risk

Every email is multi-source verified and re-checked at delivery. No bounce-fee surprises.

72h
/03 · Brief to first sample

From the first conversation to a usable, qualified test list — faster than any in-house build.

180+
/04 · Active client teams

Revenue, marketing, and RevOps teams across SaaS, healthcare, and financial services trust us.

FAQ

Email Appending FAQ

Common questions about our email appending service. Don't see yours? Email a strategist directly.

Ask a strategist

Compliance guaranteed

GDPR, CAN-SPAM, and CCPA compliant across every engagement.

72-hour turnaround

From initial brief to first sample delivery — every time.

95% deliverability

Backed by our replacement guarantee — no bounce-fee surprises.

How does email appending work?

You send us contacts with missing or outdated email addresses. We match them against our 86M-record database using name, company, title, and phone data — then return verified, deliverable email addresses.

What's your match rate for email appending?

Typical match rates range from 40-70%, depending on the quality of your input data. We prioritize accuracy over match rate — every appended email is SMTP-verified before delivery.

Are appended emails permission-based?

We source from professional networks, public filings, opt-in databases, and partner co-ops. Every appended email follows CAN-SPAM requirements and includes documented provenance. We don't scrape consumer or personal accounts.

Can you append B2B emails specifically?

Yes — that's our specialty. We focus exclusively on business email addresses, not personal accounts. Every appended address is verified as a current, active business email tied to the contact's employer.

What if an appended email bounces?

We guarantee 95%+ deliverability on all appended emails. If any appended address hard-bounces within 30 days, we replace it at no charge or credit the record against your next order.

Do you offer volume discounts for large lists?

Yes. We offer tiered pricing with significant discounts starting at 25,000 records. Enterprise clients with ongoing appending needs can negotiate custom rates. Contact us for a volume quote.

Can you append emails for international contacts?

Yes. We cover B2B contacts across North America, Western Europe, and key APAC markets including Australia, Singapore, and India. International match rates vary by region but typically range from 30-55%.

How do you handle data security during the appending process?

Your data is encrypted in transit and at rest, processed within SOC 2-compliant infrastructure, and purged from our systems within 30 days of delivery. We sign NDAs and data processing agreements upon request.

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Continuous record validation, suppression list syncing, and opt-out handling — your CRM stays healthy.

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Data Management

Ongoing hygiene, enrichment, and governance to keep your CRM accurate, compliant, and actionable.

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