Lean cold email stack for small teams

Researched by the Tentt team · draft awaiting expert review · Updated 17 October 2026

A lean cold email stack for a small team uses Prospeo to find verified emails, MillionVerifier for a second check, Smartlead to send with warm-up across unlimited mailboxes, and HubSpot's free CRM. At published prices as of October 2026, it costs about $70 to $130 a month for up to 2,000 new contacts, before mailboxes and domains.

Who is this stack for?

Founders, solo sellers and teams of two or three running their first cold email programme, who need verification, warm-up and a CRM but not Clay.

Which tools are in the stack, and what does each one do?

01Contact data
- Prospeo
  Builds the list from its search filters and returns a verified work email for each contact, charging 1 credit per email found and nothing when none is found.
  Starter $49/month (monthly) or $37/month (yearly), 2,000 credits a month; Free tier has 100 credits but no API
02Verification
- MillionVerifier
  Re-checks the exported list just before upload and flags catch-all and risky addresses, so only clean rows reach the sequencer.
  $39 one-off for 10,000 credits that never expire (several months of volume at 2,000 contacts a month)
03Sending and warm-up
- Smartlead
  Warms up mailboxes and rotates sending across them, running the sequence and the reply inbox.
  Base $39/month (monthly) or $32/month (annual): 2,000 contacts, 6,000 emails a month, unlimited mailboxes
- Instantly
  Alternative sender with unlimited email accounts and warm-up, if you prefer its interface or its native HubSpot integration.
  Growth $47/month (monthly) or $37.6/month (annual): 5,000 emails and 1,000 uploaded contacts a month
04CRM
- HubSpot
  Free system of record for contacts, companies and deals that come out of replies; Smartlead and Instantly both list native HubSpot integrations.
  Free tier (up to 2 users)
- Attio
  Alternative free CRM if you want a more flexible data model; Smartlead lists an Attio integration.
  Free tier (up to 3 seats, 50,000 records)

How does data flow through the stack?

1Build a target list in Prospeo with its search filters and export contacts with verified work emails.
2Run the export through MillionVerifier and remove invalid rows; keep catch-all rows in a separate, smaller list.
3Connect your sending mailboxes to Smartlead and let warm-up run before the first campaign.
4Upload the clean list to a Smartlead campaign and send the sequence with inbox rotation.
5Push positive replies into HubSpot Free through Smartlead's native integration and work them as deals.

How much does this stack cost per month?

About $70 to $130 a month, before mailboxes and domains

Assumes one or two users and up to 2,000 new contacts a month. Low end (annual billing): Prospeo Starter $37 + Smartlead Base $32 + HubSpot Free $0 = $69, with MillionVerifier's $39 pack lasting about five months at 2,000 checks a month. High end (monthly billing, first month): Prospeo $49 + Smartlead $39 + MillionVerifier $39 pack + HubSpot Free $0 = $127. Swapping Smartlead for Instantly Growth adds $5.6 to $8 a month but caps uploads at 1,000 contacts. Prospeo Starter is priced per user, so a second seat adds $37 to $49. Prices are the vendors' published figures checked on 17 October 2026. Sending mailboxes and domains are extra and not included.

What are the trade-offs?

There is no orchestration layer, so lists move by CSV or native integrations. Personalisation is limited to the fields Prospeo exports, unlike a Clay table that can research each row.
A single email provider means no waterfall: rows Prospeo cannot find stay empty. Adding Findymail Starter ($99 a month) as a second source roughly doubles the bill.
Smartlead Base caps you at 2,000 contacts and 6,000 emails a month. Growth past that means Pro at $78 to $94 a month.

Questions about this stack

What is the cheapest way to start cold email?

The cheapest documented setup here is Prospeo Starter and Smartlead Base on annual billing with HubSpot Free, at about $69 a month plus a one-off $39 MillionVerifier pack. Prospeo's Free plan gives 100 credits a month without API access if you want to test the data first.

Do I need a separate email verifier if Prospeo already verifies?

A separate verifier is cheap insurance rather than a hard requirement. It catches addresses that changed after export and gives a clear catch-all flag, and MillionVerifier's 10,000 credits cost $39 and never expire.

Should a small team use Smartlead or Instantly?

Smartlead Base at $32 to $39 a month allows 2,000 contacts and 6,000 emails, while Instantly Growth at $37.6 to $47 allows 5,000 emails but only 1,000 uploaded contacts. Both include warm-up and unlimited mailboxes, so the contact limit usually decides it for list-heavy teams.

Can I use Findymail instead of Prospeo?

Yes. Findymail Starter is $99 a month for 5,000 finder credits plus 5,000 bonus verifier credits, so it suits higher volumes and covers verification too. Below 2,000 contacts a month, Prospeo Starter at $37 to $49 is the lower entry price.

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Sources

Checked on 17 October 2026.