New · Workspace isolation for agencies

Email infrastructure
that scales with your outreach

Inboxstack helps you launch domains, mailboxes, DNS records, and outreach-ready inboxes in minutes — so your team can focus on conversations instead of technical setup.

Google & Microsoft mailboxes
Automated DNS setup
SPF, DKIM & DMARC configured
Built for cold outreach teams
Trusted at scale

Built for teams that send at scale

10,000+
mailboxes managed
50+
outreach tools supported
<5 min
DNS setup time
100%
workspace-level isolation
The problem

Cold email infrastructure should not take days to set up

Most teams lose a week on plumbing before they ever send their first campaign. Inboxstack collapses that into an afternoon.

Without Inboxstack
  • Buying and connecting domains manually is slow
  • DNS setup is confusing and error-prone
  • Mailbox creation eats hours of operational time
  • Poor setup quietly destroys deliverability
  • Agencies need repeatable infra across every client
With Inboxstack
  • Bulk domain purchase & connection in one flow
  • SPF, DKIM, DMARC and MX auto-configured
  • Mailboxes created in minutes, not days
  • Health checks catch issues before sends
  • Reusable workspace templates per client
Features

Everything your outbound infrastructure needs

Instant mailbox setup

Create Google Workspace and Microsoft 365 mailboxes without manual admin work.

Automated DNS configuration

Set up SPF, DKIM, DMARC, MX, and tracking records with guided automation.

Domain health monitoring

Keep track of DNS, reputation, and mailbox readiness from one dashboard.

Workspace isolation

Separate domains, mailboxes, and clients to protect sending reputation.

One-click exports

Push mailboxes into ReachInbox, Instantly, Smartlead, Lemlist, and more.

Pre-warmed inbox options

Start faster with mailboxes prepared for safer outreach workflows.

How it works

From zero to outreach-ready in minutes

01

Choose or connect domains

Buy fresh domains in bulk or bring your own.

02

Create mailboxes

Spin up Google or Microsoft inboxes instantly.

03

Auto-configure DNS

SPF, DKIM, DMARC, MX — all set the right way.

04

Check infrastructure health

Catch misconfigurations before your first send.

05

Export to your platform

Push credentials to your outreach tool in one click.

Use cases

Made for every outbound team

Agencies

Manage infrastructure for multiple clients without messy spreadsheets.

Learn more

Founders

Launch lean outbound systems without hiring technical support.

Learn more

Sales teams

Scale sending infrastructure while keeping domain health under control.

Learn more

RevOps teams

Standardize mailbox setup, DNS checks, and platform exports.

Learn more
Deliverability

Protect your domain reputation from day one

Inboxstack helps you build a safer cold email foundation with proper authentication, workspace separation, and ongoing infrastructure checks.

Protect my domains
Infrastructure score
98 / 100
SPF configured pass
DKIM verified pass
DMARC active pass
MX records checked pass
Tracking domain connected pass
Mailbox status monitored pass
Integrations

Connect with the tools your team already uses

Export your infrastructure into your outreach workflow without copy-pasting credentials or switching between dashboards.

R
ReachInbox
One-click export
I
Instantly
One-click export
S
Smartlead
One-click export
L
Lemlist
One-click export
A
Apollo
One-click export
C
Clay
One-click export
H
HubSpot
One-click export
Z
Zapier
One-click export
Pricing

Simple pricing for scalable infrastructure

Starter
For founders and small teams
  • 10 mailboxes
  • Automated DNS
  • Basic health checks
  • Standard support
Get started with Inboxstack
Most popular
Growth
For growing outbound teams
  • 30 mailboxes
  • Multiple workspaces
  • One-click exports
  • Advanced DNS checks
Get started with Inboxstack
Scale
For agencies and high-volume teams
  • 100+ mailboxes
  • Client workspaces
  • Priority setup
  • Dedicated support
Get started with Inboxstack
FAQ

Questions, answered

Ready in minutes

Build your outbound infrastructure
without the chaos

Launch domains, mailboxes, DNS, and exports from one clean dashboard.