Twitter/X

@SalesBlastBen (May 29, 2026) recommends a lean four-tool cold-email stack for…

Brief

Author @SalesBlastBen recommends a four-tool cold-email stack for agencies under $10K/month: CheapInboxes (Google inboxes, from $2.8/inbox), Apollo for prospect data, MillionVerifier to validate addresses and protect deliverability, and Instantly to run campaigns. Keep the setup minimal and daily-usable, adding tools only when scale forces it.

Why it matters

@SalesBlastBen (May 29, 2026) recommends a lean four-tool cold-email stack for agencies generating < $10K/month: CheapInboxes (Google inboxes; charges as low as $2.8 per inbox), Apollo for lead data, MillionVerifier for email validation, and Instantly for sending campaigns.

Key details

  • Rationale: messy inbox setups break cold email and bad addresses 'burn' inboxes and hurt deliverability—MillionVerifier is non-negotiable—and Instantly keeps sending simple so you avoid heavy mailbox/DNS management until growth requires more tools.
Source evidence

There's so much noise in the cold email space. Honestly, if you're generating < $10K/mo, my advice is to keep things lean and only use a handful of tools.

Here's what I'd use starting out:

  1. Cheap Inboxes

I’d get Google inboxes here (biased). Cold email breaks fast when inbox setup is messy. I don’t want to spend my day patching mailboxes, DNS, logins, and setup while the agency is still small.

At this stage, I want clean inboxes I can set up fast and manage without a big bill. And we charge as low as $2.8 per inbox.

  1. Apollo

Use Apollo for data. Is it perfect? No. But it's well rounded. Under $10K/mo, I need a simple way to find leads, build lists, and test offers without buying separate tools. Apollo gets me moving.

  1. MillionVerifier

Run emails through MillionVerifier before sending. Bad emails burn inboxes and waste sends. It can also hurt your deliverability. It's one of the few tools I wouldn't skip because it protects the stack.

  1. Instantly

Instantly is a well-rounded sender. It keeps sending simple. I can load inboxes, add lists, write campaigns, and see what's happening without making setup a full-time job.

That’s the stack.

  • CheapInboxes for Google inboxes.
  • Apollo for data.
  • MillionVerifier for email checks.
  • Instantly for sending.

If I was starting again, I’d rather have a small setup I use every day than a huge setup I keep paying for.

Keep it lean until the work forces you to add more.

Video