New Playbook: Cold Email Infrastructure Setup Guide

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groups Built for Agencies

Email finder built for agencies that run outbound at scale

Pull verified emails for every client campaign from one shared credit pool. No per-seat fees, no client-by-client billing headaches, no caps on how many workspaces your team can run in parallel. Mailsfinder gives agencies 300,000 credits per cycle on the Monthly plan and 2,000,000 credits one-time on Lifetime, with a full API on every paid tier.

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check_circle50 free credits, no card check_circle99% accuracy check_circleNo per-seat fees
workspaces
Agency Workspace
5 active client campaigns
SaaS Client A, Cold outbound 42,180 emails
Link-build Client B, Editor list 11,400 emails
Recruitment Client C, Devs 7,920 emails
SaaS Client D, Re-engagement 18,650 emails
Credit pool remaining 219,850 / 300,000
One plan, every client

Trusted by lead gen, link-building, and recruitment agencies in 40+ countries

Klients Growth Outbound Labs LinkRise TalentForge DemandLoop PipelinePro
Why agencies pick Mailsfinder

Three things every agency owner asks about first

Bulk CSV, full API, and a credit pool that actually scales. Everything else is built around these three.

upload_file

Bulk CSV upload and export

Drop a list of 50,000 LinkedIn URLs or first name + last name + domain rows and get verified emails back in one file. No row limits per upload. Exports come out clean for client handoff or CRM import.

terminal

Full API on every paid plan

Finder, Verifier, and Enrichment endpoints are included on Monthly and Annual. Lifetime ships Finder and Verifier. Wire it into n8n, Make, Zapier, or your own backend and stop paying API-tier surcharges.

savings

Credits that match agency volume

300,000 credits per cycle on Monthly for $9.99. 2,000,000 credits one-time on Lifetime for $249. Compare that to Hunter Pro at 5,000 credits for $99 and the math is obvious.

How it works

From client brief to verified outbound list in four steps

The same workflow whether you are running one campaign or running five at once.

1

Upload your list

Paste a CSV of LinkedIn URLs, name + domain pairs, or company URLs scraped from Apollo, Sales Navigator, or any source your client provided.

2

Find emails in bulk

Mailsfinder runs each row through pattern detection, SMTP probing, and catch-all checks. Results land in the workspace tagged by client campaign.

3

Verify deliverability

Every email runs through a real-time verifier. Bounce-prone addresses are flagged and removed before they touch your client's sending domain.

4

Export to CRM

Push verified contacts directly into Instantly, Smartlead, Lemlist, HubSpot, or any tool through native integrations or the REST API.

Deep dive

White-label CSV delivery without watermarks or branded headers

Most agencies do not want their client knowing which vendor sourced the data. Mailsfinder exports come out as plain CSVs you can rename, restructure, and brand however you want. The Mailsfinder name appears nowhere in the file.

  • check_circle Custom column names. Relabel "verified_status" to whatever your client's CRM expects.
  • check_circle Strip metadata on export so no source attribution leaks into the file.
  • check_circle API-driven branded delivery. Pipe data through your own dashboard with your agency logo on top.
  • check_circle Per-client tagging in the workspace so credits and exports stay attributed without exposing the vendor.
client_a_outbound_list.csv 
first_name,last_name,company,role,email,status
Sarah,Chen,Acme SaaS,VP Marketing,sarah@acme.io,verified
Marcus,Bell,FlowOps,Head of Growth,marcus@flowops.com,verified
Priya,Shah,Northwind,Demand Gen Lead,priya@northwind.co,verified
Tom,Reyes,LumenAI,CMO,tom@lumenai.com,verified
Devi,Iyer,GreenBox,Marketing Director,devi@greenbox.com,verified

// No Mailsfinder branding anywhere in the file

Pricing

Pricing that fits the way agencies actually buy data

Pick a recurring plan for steady client load. Pick Lifetime when you want a credit pool that never expires.

Most Popular

Monthly

For agencies running steady outbound across 3 to 10 clients.

$9.99 /month
  • check300,000 credits per cycle
  • checkFull Finder, Verifier, Enrichment APIs
  • check25,000 exports per month
  • check600 req/min rate limit
  • checkUnlimited Signals
  • checkPriority email support
Start Free Trial

Annual

Lock in 20% savings on a year of credits paid up front.

$7.99 /month

Billed $95.88 per year

  • check300,000 credits per cycle
  • checkFull Finder, Verifier, Enrichment APIs
  • check25,000 exports per month
  • check600 req/min rate limit
  • checkUnlimited Signals
  • checkPriority email support
Choose Annual

Lifetime

One-time payment, two million credits, no recurring bill.

$249 one-time
  • check2,000,000 credits (lifetime pool)
  • checkFinder and Verifier APIs
  • check5,000 exports per month
  • check1,000 Enrichment calls per month
  • check25 Signals per month
  • check300 req/min, lifetime access
Get Lifetime

Top-up credit packs for overflow campaigns

Stack on any plan. Credits never expire. Useful when a client signs a bigger contract mid-cycle.

10K
credits
$5
22K
credits
$9
42K
credits
$14.99
100K
credits
$29
250K
credits
$59
Agency use cases

Built for the four motions agencies actually run

Lead gen, link building, recruiting, and inbound qualification. One credit pool, four playbooks.

campaign

Lead gen agencies

Running 5 cold email campaigns for 5 different SaaS clients in parallel. Pull 50K to 100K verified contacts per client per month from one shared 300K credit pool. No per-client invoicing on the tool side.

link

Link-building agencies

Find editor, journalist, and content marketer emails on niche publications. Mailsfinder's domain search returns every public address tied to a site, so you can prioritize the right contact without guessing roles.

work

Recruitment agencies

Scrape LinkedIn job postings to find recruiter and hiring manager emails for an active req. Enrich a candidate shortlist with personal-but-professional addresses for sourcing outreach.

verified_user

Inbound qualification

Verify form-fill emails before they hit a client's CRM. Block role accounts, catch-all domains, and obvious bounces so your client's SDR team only works clean inbound leads.

FAQ

Questions agency owners ask before signing up

How does Mailsfinder pricing work for agencies running multiple clients? expand_more
Mailsfinder bills per workspace, not per seat or per client. One Monthly plan at $9.99/mo gives your agency 300,000 credits per cycle to spend across every client campaign you run. If you need a larger pool, the Lifetime plan at $249 one-time unlocks 2,000,000 credits that never expire.
Can I white-label exports to send data to my clients? expand_more
Yes. CSV exports from Mailsfinder are plain data files with no Mailsfinder branding or watermarks. You can rename columns, drop unused fields, and hand the file directly to your client or push it into their CRM. Many agencies build a custom CSV template on top of our API for fully branded delivery.
Is there a multi-user or team feature for agencies? expand_more
Mailsfinder does not charge per seat. The credit pool is shared across the workspace, so your strategists, VAs, and outreach managers can all pull data without billing complications. For larger agencies that want isolated workspaces per client, the API lets you script that boundary on your side.
What are the API rate limits on the agency-friendly plans? expand_more
Monthly and Annual plans get 600 requests per minute on the Finder, Verifier, and Enrichment APIs. The Lifetime plan caps at 300 req/min. For most agency workloads of 5,000 to 50,000 lookups per day, 600 req/min is plenty of headroom.
Which automation tools does Mailsfinder integrate with? expand_more
Mailsfinder has native nodes and modules in n8n, Make, and Zapier. Agencies typically wire Apollo or Sales Navigator scrapes into Mailsfinder for enrichment and verification, then pipe the verified contacts into Instantly, Smartlead, Lemlist, HubSpot, or a custom client CRM.
How accurate is Mailsfinder for B2B contact data? expand_more
Mailsfinder hits 99% accuracy on verified emails by chaining SMTP checks, MX validation, and catch-all detection on every result. For agency cold outreach, this keeps bounce rates under 2% and protects sender reputation across your clients' sending domains.
What happens to unused credits at the end of a billing cycle? expand_more
Monthly and Annual credits refresh each cycle and do not roll over. The Lifetime plan is different: its 2,000,000 credit pool never expires and can be drawn down at whatever pace the agency needs.
Can I top up extra credits if a client campaign goes bigger than expected? expand_more
Yes. Credit packs are available on top of any plan: 10,000 for $5, 22,000 for $9, 42,000 for $14.99, 100,000 for $29, and 250,000 for $59. Packs never expire and stack on top of your subscription pool.

Run every client campaign from one credit pool

Start with 50 free credits. No card needed. Move to the Monthly plan when your agency is ready to scale, or grab the Lifetime plan for a credit pool that never expires.

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