Pay-as-you-go · No tiers · No minimums

Start conversations.
Not campaigns.

BoomSauce is email infrastructure built for replies. First-touch messages go out as plain, human text — no links, no images, no trackers — because the only metric that matters is whether the recipient writes back. Usage-based pricing, deliverability handled end to end.

$20/yr
Domain + setup
$1/mo
Mailbox hosting
$0.25/50
Warmup block
$1/1K
Sends

Three steps to your first reply.

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

01

Add a domain

$20/year. We register it, wire DNS + SPF/DKIM/DMARC, spin up 5 mailboxes, and build you a free 1-page website so the domain looks real from day one.

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 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.

Solo founder
30K/month
1 domain · 5 mailboxes
  • Domain + setup + website$1.67/mo
  • 5 mailboxes × hosting$5/mo
  • 5 mailboxes × warmup (50/day)$37.50/mo
  • 30,000 sends$30/mo
Monthly total$74/mo
COMMON
Small team
150K/month
5 domains · 25 mailboxes
  • 5 domains$8.33/mo
  • 25 mailboxes × hosting$25/mo
  • 25 mailboxes × warmup (50/day)$187.50/mo
  • 150,000 sends$150/mo
Monthly total$371/mo
Scale
500K/month
10 domains · 50 mailboxes
  • 10 domains$16.67/mo
  • 50 mailboxes × hosting$50/mo
  • 50 mailboxes × warmup (50/day)$375/mo
  • 500,000 sends$500/mo
Monthly total$942/mo
Rate card
Domain
$20/yr

Registration + DNS + SPF/DKIM/DMARC + free 1-page website.

Mailbox hosting
$0.03/day

~$1/month per mailbox. 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
$1.00/1K

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.

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