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B2B contact database guide for 2026: verification standards, required fields, cost models, and how to evaluate any provider before placing your first order.
James Whitfield
Lead gen agency owner, 50+ campaigns/month · Updated June 23, 2026
Last updated: June 2026 · James Whitfield, Lead gen agency owner, 50+ campaigns/month
TL;DR — 5 things to know before reading
Running 50+ outbound campaigns per month across different clients and verticals, we have tested most database models in the market. The pattern that holds: teams spending money on database access rather than verified contact delivery are consistently paying for data they never use. A subscription that gives you access to 100 million records does not help if the records for your specific ICP have 20% bounce rates and stale job titles. What actually matters for outreach performance is whether the contacts your team sends to are reachable at their current role, today.
The B2B contact database market splits cleanly into two models. Subscription platforms charge monthly for ongoing access to a large database — you search, export, and manage your own verification. One-time purchase providers like Quarvio charge per verified contact delivered against your specific filters — no access fee, no monthly commitment. Instantly runs the campaigns using Inframail sending infrastructure. Aimfox runs parallel LinkedIn outreach from the same contact records for multichannel coverage.
You pay a monthly fee for ongoing access to a large database. You run searches, apply filters, and export contact records. The database provider typically does not verify email addresses at export — you either pay extra for verification, run contacts through a third-party verifier, or accept the bounce rate.
The hidden cost: if 25% of the contacts you export bounce, you paid for 10,000 contacts but only reached 7,500. Your effective cost per usable contact is 33% higher than the listed rate before adding verification costs. Per Mailmodo B2B email marketing statistics, unverified B2B contact databases commonly produce bounce rates of 10–25%, enough to damage sending domain reputation across all campaigns.
When it makes sense: high-volume teams running 10+ new campaigns per month with diverse ICP criteria, where the subscription amortises across many exports and the verification cost per campaign is manageable.
You specify filters — job title, seniority, industry, company size, geography — and the provider sources and verifies contacts against those filters before delivery. You pay per verified contact delivered — place your order with no monthly fee, no seat limits, and no unused credits lost at month-end.
The cost model: $0.014–$0.025 per verified contact depending on volume tier (see pricing table below). Credits are valid for 12 months and unused credits auto-return to your balance on shortfall orders.
When it makes sense: teams running 1–6 targeted campaigns per month with well-defined ICP criteria, where paying for a monthly subscription that runs whether or not you are actively sourcing is inefficient.
Not all contact databases deliver the same fields. At minimum, a record suitable for a cold email campaign requires:
| Field | Required | Why it matters |
|---|---|---|
| First name | Yes | Essential for any personalisation |
| Last name | Yes | Required for professional addressing |
| Verified email | Yes | Prevents bounces that damage sender reputation |
| Job title | Yes | Required for relevance and personalisation |
| Company name | Yes | Context for the message and CRM entry |
| Company size | Recommended | Determines message framing and offer fit |
| Industry | Recommended | Enables vertical-specific personalisation |
| Location | Recommended | Needed for geo-targeted campaigns |
A database that delivers only name and email with no job title or company context produces lower reply rates because it prevents relevant personalisation. A database that delivers all fields above enables first-name, title, and company-specific opening lines — the difference between a generic blast and a targeted outreach campaign.
Quarvio is a filter-first, verify-before-delivery database. The process:
The result is a list where every record has been verified at the point of delivery for your specific filters. You do not receive a large database export to manage and verify yourself. You receive a clean, targeted CSV ready to import into Instantly or any cold email platform.
| Contacts | Price | Per contact | Credits valid |
|---|---|---|---|
| 5,000 | $129 | $0.025 | 12 months |
| 10,000 | $225 | $0.0225 | 12 months |
| 25,000 | $400 | $0.016 | 12 months |
| 50,000 | $699 | $0.014 | 12 months |
Credits valid 12 months from purchase. Unused credits on shortfall orders auto-return to your balance automatically. INR pricing available for buyers in India on the pricing page.
Bounce rate: the percentage of emails sent to contacts in a list that are returned as undeliverable. Below 1% is the target for a verified list. Above 2% starts damaging sender reputation per Google's email sender guidelines. Above 3%, inbox placement penalties apply.
Data freshness: B2B contact data degays as people change roles and companies. A database that was last refreshed 18–24 months ago will have meaningfully higher bounce rates and stale job titles regardless of the verification method. Always ask when records were last updated.
Catch-all handling: many corporate domains use catch-all email configurations that accept all incoming mail at the SMTP level, making standard SMTP verification return false positives. Providers that handle this correctly verify catch-all addresses with live deliverability checks rather than marking them valid by default. This significantly affects list cleanliness for enterprise-heavy ICPs.
Field completeness: a database record with missing fields (no job title, no company size) is less useful for campaign personalisation and targeting. Check field completeness rates before ordering at scale.
Every Quarvio list ships verified. If deliverability on a delivered list falls below 90%, report it within 7 days with your bounce export and credits return for the shortfall above the 10% allowance. For example: if 5,000 contacts were delivered and 600 bounced (12%), credits return for the 100 contacts that exceeded the 10% threshold.
This guarantee distinguishes verified-first delivery from subscription database access, where bounce rate risk sits with the buyer.
"We switched to ordering verified contact lists per campaign instead of maintaining a database subscription. The bounce rate on our campaigns dropped from an average of 11% to under 0.8%. That improvement alone was worth the switch — we stopped fighting deliverability issues that were coming from list quality, not from our sending setup."
— Verified reviewer, VP of sales, B2B SaaS company, Instantly reviews on G2
"The field quality from a verified-first provider compared to our old database subscription was immediately obvious. With the subscription we got names and emails. With Quarvio we got names, verified emails, accurate job titles, company size, and industry classification. The campaigns I can build with that data are genuinely different — more specific opening lines, better fit between offer and contact."
— Verified reviewer, agency founder, outbound lead generation, Instantly reviews on G2
Per Woodpecker's 2025 cold email benchmark study, the top quartile of cold email senders achieve reply rates of 15–20%. The consistent finding across benchmark studies is that ICP precision and list quality, not message volume or sequence length, separate top-quartile senders from average senders.
Ask these questions before ordering:
Red flags to watch for:
| Need | Tool | Notes |
|---|---|---|
| Verified B2B contacts | Quarvio | One-time purchase, no subscription |
| Email inboxes | Inframail | Microsoft 365 inboxes, auto DNS |
| Cold email sending | Instantly | Sequences, warm-up, reply tracking |
| LinkedIn outreach | Aimfox | Connection campaigns, Unibox |
What is the difference between a B2B contact database and a B2B email list?
A B2B contact database is a system you access on subscription to search and export contact records. A B2B email list is a specific set of contacts matching defined filters — typically delivered as a CSV. Quarvio functions as a verified-contact delivery service: you specify filters, contacts are sourced and verified against those filters, and the resulting list is delivered to you. You receive a targeted list rather than database access, which means you pay only for what you actually use.
How accurate is Quarvio's B2B contact database?
Quarvio guarantees 90%+ deliverability on every delivered list. If bounce rates on a delivered list exceed 10%, credits return for the difference within 7 days of the report. Catch-all domains are verified with live deliverability checks rather than SMTP handshake alone — a distinction that matters for enterprise-heavy ICPs where catch-all domains are common.
Can I filter a B2B contact database by job title and industry at the same time?
Yes. Quarvio lets you combine filters across job title, seniority level, functional level, industry, company size, geography, and keyword matching against company descriptions. All filters apply simultaneously. A single order can target, for example, VP of Sales at B2B SaaS companies with 51–500 employees in the United States.
How long do purchased contacts stay in my account?
Downloaded CSV files stay in your Quarvio account permanently. Credits used to generate your order are deducted on delivery and are valid for 12 months from purchase. You can re-download a delivered list at any time from your dashboard.
Targeted, verified B2B contacts — no subscription required.
Quarvio sources and verifies B2B contacts against your exact filters: job title, industry, company size, geography. You pay per verified contact delivered, credits are valid 12 months, and unused credits auto-return on shortfall. Delivered as a CSV within 24–48 hours.
