FeaturesThe Complete Cold Email Infrastructure Platform.
Domains, mailboxes, DNS, deliverability testing, and platform exports — everything you need to run cold email at scale, managed from one dashboard.
Trusted by 2,000+ agencies and sales teams to power cold email infrastructure
Instantly
Smartlead
Apollo
Lemlist
HubSpot
SalesforceBuilt for ScaleCold Email Infrastructure Done Right
Whether you're running outbound for one client or fifty, Inbox One gives you the infrastructure layer that sits beneath your entire cold email stack.
Buy domains, provision Google Workspace mailboxes, and auto-configure DNS records — all from one dashboard. No registrar hopping, no manual setup.
Pre-warmed mailboxes with established sender reputation. Or warm your own with custom schedules. Either way, your deliverability is protected from day one.
Export to Instantly, Smartlead, Reply, Lemlist, Woodpecker, and 10+ more platforms with one click. OAuth-powered — no SMTP credentials to copy-paste.
Proven ResultsTrusted by cold email agencies and growth teams worldwide
Average inbox placement rate
Mailboxes provisioned
Faster mailbox provisioning
FeaturesEverything You Need to Scale Cold Email
Domains, mailboxes, DNS, deliverability, and platform exports — all managed from one dashboard. Here's what powers your outbound infrastructure.
Automated Google Workspace Provisioning
Provision Google Workspace mailboxes with one click. We handle admin setup, 2FA, app passwords, and OAuth — your mailboxes are ready to send, not just created.
Full DNS Auto-Configuration
SPF, DKIM, DMARC, and MX records set up automatically for every domain. No manual edits, no propagation guesswork — just verified, deliverability-optimized DNS from the start.
Scale From 10 to 100+ Mailboxes
Start with 10 mailboxes on Starter, scale to 100+ on Max. Buy additional quota anytime. Multi-workspace organization keeps your clients and campaigns separated.
Inbox Placement Testing
Test where your emails actually land — inbox or spam. Run placement tests with seed accounts across Google and Microsoft, and track deliverability health over time.
Domain Health & Inbox One Protect
Monitor domain reputation, detect DNS issues, and auto-fix problems before they hurt deliverability. Inbox One Protect watches your domains 24/7 for just $2/domain/month.
FAQ'sFrequently Asked Questions
Common questions about Inbox One's cold email infrastructure, mailbox provisioning, and deliverability features.
Select a domain, choose the number of mailboxes you need, and Inbox One automatically provisions Google Workspace accounts with full admin setup, 2FA, app passwords, and OAuth — all in minutes. No manual configuration required.
Yes. SPF, DKIM, DMARC, and MX records are configured automatically for every domain — whether you buy through us or connect your own. We support both Cloudflare and ClouDNS for DNS management.
Inbox One supports one-click OAuth export to 5 platforms: Instantly, Smartlead, ReachInbox, Reply.io, and Coldbox. You can also export via CSV with SMTP credentials.
Pre-warmed mailboxes come with established sender reputation from weeks of warming activity. They're ready to send cold email from day one without the typical 2-4 week warm-up period that fresh mailboxes require.
Inbox One Protect monitors your domain health 24/7 for just $2/domain/month. It checks DNS configuration, detects deliverability issues, and can auto-fix problems before they impact your inbox placement rates.
Cold email infrastructure platform. Buy domains, provision Google Workspace mailboxes, auto-configure DNS, and export to 5 outreach platforms — all from one dashboard.
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