“I just wanted to commend the team. The experience was incredibly easy — and all the mailboxes got set up for me.”
Sami Ahmad
scaleyourresults
Growth Rangenow
Quick question about Acme's growth
Trusted by 4,200+ outbound teams
Cold email mailboxes that land in the inbox.
Done-for-you mailbox infrastructure from the team behind Lead Gen Jay. Domains, DNS, warmup, providers — perfectly configured. Live in under an hour, not three weeks.
inboxinsiders.io / dashboard
Active mailboxes
25 +9 today
Inbox rate
98.4%
Avg time to live
47min
Mailbox health
hello@growthrange.com
99.6% inbox
sales@reachoutpro.com
98.9% inbox
ops@scaleinbox.com
99.3% inbox
30-day deliverability
Inbox placement rate0%
Trusted by all the industry titans
How it works
From sign-up to landing in the inbox.
No DNS dashboards. No Workspace admin chairs. No “wait, why are we in spam?” Slack threads. Watch the whole flow:
01 · Mailboxes provisioning
202 · Added to your sequencer
303 · Warmup started
404 · Landing in the inbox
Inbox Insiders
hello@growthrange.comsetting upsales@reachoutpro.comsetting upops@scaleinbox.comsetting upteam@tryreachout.comsetting up
founders@growth-range.comsetting upcontact@scaleinbox.iosetting up→
Your sequencer
SenderReputation
hello@growthrange.com12
sales@reachoutpro.com12
ops@scaleinbox.com12
team@tryreachout.com12
founders@growth-range.com12
→
Prospect inbox
Reach Out Pro1m
10 min next Tuesday?
Scale Inbox3m
Saw your team is hiring SDRs
Inbox empty…
Average time from order to landing in the inbox: 47 minutes. No DNS knowledge required.
Deliverability
Built to land in the inbox. Every send. Every time.
Real numbers from 25,000+ deployed mailboxes. We tune SPF, DKIM, DMARC, BIMI, and warm-up cadence to Gmail and Outlook spec — so your team isn't fighting filters in week three.
Where your emails land, by recipient
When mailboxes from Inbox Insiders send to each provider, here's where the messages actually arrive.
Inbox Spam / Junk
Google Workspace (Gmail)
Microsoft 365 (Outlook)
Other Providers
30-day rolling placement across 25,000+ deployed Inbox Insiders mailboxes. Independently measured against Glock Apps seed lists, broken down by recipient mailbox provider.
New · Claude Skill + CLI
Spin up perfect mailboxes in Claude Code.
Our one-command Claude skill and CLI give Claude Code, Cursor, and any LLM agent the same tools your humans use — domain suggestion, registration, mailbox provisioning, DNS verification, and credential export.
- 9 mailboxes ordered, registered, and warming in under 90 seconds of chat
- Charges your saved Stripe card — no hand-off to a human queue
- Auto-uploads mailboxes to Instantly or EmailBison when finished
claude-code · inbox-insiders skill
Reviews
What 4,200+ founders say about our mailboxes.
From the public review wall at leadgenjay.com/reviews. Real names, real numbers, real campaigns.
“Before joining, I was struggling with 15-16% open rates and wasting money on incorrectly set up email systems. Now I'm achieving 76% open rates — numbers I never imagined possible.”
Nikolas Narici
Founder, Visioninbox
“Within about 30-45 days in the program I doubled what I had been making on average for the previous six months. The cold outreach systems are the best I have seen.”
TM
Tom Meitner
Self Employed
“Before this, I was getting about 30% open rates for my clients. Already I'm getting 50%+ open rates and my client is very happy.”
A
Augustinas
Email Operator
Real campaigns
Past results don't guarantee the future, but they come pretty close.
A snapshot from leadgenjay.com/results — real campaigns running on Inbox Insiders mailboxes.
145 Opportunities · $635K Pipeline
Michaels and Marc Restoration
Denver roofing contractor generated 145 opportunities worth $635,000 from cold email outreach with 8.3% reply rates on the top-performing segment.
Read case study
0.5% → 5.8% Reply Rate
Econsultify
Nathan Doan transformed a construction staffing client's cold email results from 0.5% to 5.8% reply rates using AI-enriched campaigns and Inbox Insiders mailboxes.
Read case study
$689K+ Pipeline · 3.3% Reply
Qazzoo & USHUD
Real estate platform generated $689K+ in pipeline from cold email with 3.3% reply rates and 2,900 opportunities; top campaign hit 13% reply.
Read case studyPricing
Choose your email infrastructure.
Select the type of email infrastructure for your cold email campaigns. Pause, scale up, or cancel any time.
Instant setup
LGJ Premium SMTP
Premium mailboxes using private servers with managed IPs for best deliverability.
30 emails/day per mailbox1 domain per 3 mailboxes$3 setup fee per mailbox
$3.5/mailbox
per month
Google Workspace
High deliverability with Gmail infrastructure.
30 emails/day per mailbox1 domain per 3 mailboxes$3 setup fee per mailbox
$3.5/mailbox
per month
Microsoft 365
Enterprise-grade Outlook infrastructure with bulk pricing.
5 emails/day per mailbox1 domain per 49 mailboxes$10 setup fee per domain
$30/49 mailboxes
per month
FAQ
Common questions.
Average time from order to live mailboxes is 47 minutes. Domains register, DNS propagates, SPF/DKIM/DMARC verify, and a 21-day warmup begins automatically. You'll get a credentials export the moment everything goes green.
Across 25,000+ deployed mailboxes, 30-day rolling inbox placement sits at 99% measured against Glock Apps seed lists across Gmail, Outlook, and Yahoo. Spam folder rate stays under 1%, bounce rate under 0.5%.
No. We register the domains, configure every DNS record, run the warmup, and hand you working credentials. If something drops out of spec later, we fix it — that's what the per-mailbox monthly fee covers.
Yes. Pick 'full control' mode and supply the domains you already own — we'll handle DNS configuration and mailbox provisioning. 'Easy' mode auto-registers fresh .com domains for you ($12 each).
One curl command installs our skill into ~/.claude/skills and Claude Code learns the whole API: domain suggestions, availability checks, ordering (SMTP or Google Workspace), status polling, and credential export. Same auth as your dashboard, charges your saved card. There's also a zero-dependency CLI. Most teams use it for client onboarding agents.
Auto-upload supported for Instantly and EmailBison directly from the order form (or via the API/CLI). Standard SMTP/IMAP credentials work with Smartlead, Lemlist, Reply, and any other tool that accepts custom mailbox connections.
Yes — pause or cancel any mailbox monthly. No long-term contracts. Domain registrations are yours and transferable.
Ready to land in the inbox?
Spin up your first 100 mailboxes in under an hour. Or hand the keys to Claude Code and watch it happen.