B2B cold outreach · Pay-as-you-go · No per-seat fees

Cold outreach,
built for B2B.

One platform replaces Apollo + Smartlead + your warmup tool. Domain registration, DNS, real-mailbox warmup, sending, and per-mailbox reputation — all wallet-priced, all visible. Built for founders running their own outbound, agencies running clients', and RevOps teams scaling SDRs.

$25/yr
Domain + setup
$0.033/day
Mailbox hosting
$0.25/50
Warmup block
$1.50/1K
Sends
Built on
SendGrid (Twilio)·CheddarInbox·Cloudflare·Stripe·Namecheap
Counter-positioning

What this is not.

If you fit one of these, we're the wrong tool — go save your time.

  • Newsletters or content email
    Use Beehiiv, Substack, ConvertKit. Different motion.
  • Transactional email (receipts, password resets)
    Use SendGrid or Resend directly. We sit on top of those.
  • B2C broadcast / e-commerce promos
    We don't allow consumer cold mail and we enforce it.
  • Built-in lead database
    Apollo and ZoomInfo own that layer. Bring your own list.
  • Full CRM with deal stages
    We push reply events to your existing CRM via webhook.
  • LinkedIn or multi-channel sequences
    Email-only. The deliverability stack is the moat.

Same job. Half the bill.

Move the sliders. Numbers update live against published Apollo + Smartlead + Mailwarm pricing.

Replace your stack — see the math.

Apollo + Smartlead + warmup tool vs BoomSauce.

SDRs
3SDRs
Sends per month
50K
Domains
3domains
Today's stack
  • Apollo · 3 seats$297/mo
  • Smartlead · 50K sends$94/mo
  • Mailwarm · 15 mailboxes$1,185/mo
Total / month$1,576
BoomSauce
  • Mailbox hosting (15 mailboxes)$15/mo
  • Warmup (steady state)$34/mo
  • Sends · 50K @ $1.50/1K$75/mo
  • Domains · amortized$6/mo
Total / month$130
Estimated savings
$1,446/mo·$17,354/yr
Start free

Competitor pricing is mid-tier published rates as of 2026-04-29 (Apollo Professional $99/seat, Smartlead Basic $94/50K, Mailwarm $79/mailbox). Per-seat enterprise discounts not factored in.

Three steps to your first reply.

Roughly 30 minutes of configuration, then a 21-day warmup window before production volume.

01

Add a domain

$25/year for a fresh one — registration + DNS + SPF/DKIM/DMARC + 5 mailboxes + a free 1-page website. Or bring your own domain free; we wire DNS while you keep the registrar.

02

Warm it up

$0.25 per 50-email warmup block on our private CheddarInbox network. 21-day ramp to production volume. Real human inboxes, not synthetic traffic.

03

Start conversations

$1.50 per 1,000 sends. Pay-as-you-go from your wallet. Every first email is plain, human, and designed to get a reply — no links, no CTAs, no images.

The tools aren’t the problem.
The playbook is.

Standard cold email advice — links, CTAs, images, calendar invites on the first touch — is the primary driver of spam-folder placement. The fix is structural, not a better subject line.

The old way
  • Tiered plans that gate features on day one
  • Customers handed a list of DNS records to configure alone
  • Warmup sold separately or not offered at all
  • First emails shipped with links, images, and trackers
  • Replies scattered across individual mailbox inboxes
  • Unused prepaid credits forfeited on cancellation
The BoomSauce way
  • Pay-as-you-go wallet with no minimum commitment
  • Full domain setup — DNS, authentication, mailboxes, and website
  • Warmup included as a first-class product, priced per mailbox
  • Zero links on first emails, enforced by the platform
  • Unified conversation inbox across every mailbox and domain
  • Unused balance refundable on request

Six principles the platform enforces.

Email is a conversation medium. The send gates, pricing model, warmup network, and account verification all enforce that — so the right behavior is the default behavior.

Replies are the metric

Open rates are vanity. Reply rates are the business. Every product decision — send gates, templates, inbox design — is oriented toward a response from a real person.

No links on the first send

Hyperlinks, images, and tracking pixels are the fastest path to the spam folder. BoomSauce strips them from every first-touch email. Once a recipient replies, standard formatting is available on follow-ups.

Warmup on a private network

Warmup runs through CheddarInbox — a private peer-to-peer network of real mailboxes that generate real engagement signals. No synthetic traffic, no public warmup pools.

Managed domains, end to end

Domain registration, DNS, SPF, DKIM, DMARC, five mailboxes, and a one-page website are configured in a single flow. No hand-off, no DNS copy-paste, no gaps in your footprint.

Usage-based billing

One wallet drives the whole account. No tiered plans, no monthly minimum, no long-term contract. Unused balance is refundable on request.

Verified volume accounts

Accounts requesting high-volume infrastructure undergo identity verification before provisioning. This protects deliverability across the platform for every customer.

A rate card, not a subscription.

Fund your wallet once. Everything meters against it — domains, mailbox hosting, warmup blocks, outbound sends. No tiers. No minimums. Top up when you need more.

Rate card
Domain
$25/yr

Registration + DNS + SPF/DKIM/DMARC + free 1-page website. Or bring your own domain free — we wire DNS, you keep the registrar.

Mailbox hosting
$0.033/day

Per mailbox, billed daily (~$1/month). Keeps it provisioned, reachable, and receiving replies.

Warmup
$0.25/50 emails

Sold in 50-email blocks. CheddarInbox network — real humans, real engagement.

SMTP send
$1.50/1K

Metered per email. Negotiated rates for 1M+/month — contact sales.

Enterprise volume. Accounts requiring 50+ domains or sustained volume above 1,000,000 emails per month are provisioned after identity verification and a brief intake call. Custom pricing available. Contact sales →

Create your account

Signup is free. Fund your wallet to purchase a domain and start sending.

New

Now works for teams

Invite your ops, your agency, your assistant. One wallet, shared control, scoped permissions. Switch between accounts with one click when you run more than one.

Roles

Owner, Admin, Member

Owners manage billing and the team. Admins handle everything else. Members send and read. Destructive actions are gated per role.

Invites

One email, they're in

Enter a teammate's email, pick a role, click send. They get a signed link, sign in with Google, and land on your team's dashboard.

Multi-account

Manage several accounts

Agencies and operators running a portfolio: your email can belong to any number of accounts. The tenant switcher is in your sidebar.

Email that reads like a person wrote it.

Built for teams that measure success in replies, not opens. Usage-based infrastructure, reply-first by default, deliverability handled end to end.

Create your account