Cold Email InboxesBuilt for Deliverability
Enterprise Mailboxes Built for Cold Email and Inboxing Across all ESPs
Who this is for
Built for operators who need stability and reliability
If cold email is how you and your clients generate revenue, InfraSuite is the piece that keeps your business stable while you focus on results.
Cold email agencies
Running multiple client accounts and need reliable Outlook capacity without building or babysitting infrastructure yourself.
In-house outbound teams
Outbound is a core channel for pipeline and you want Outlook mailboxes that keep up with quota without constant replacements.
Go-to-market specialists
You own the GTM motion across channels and need mailboxes that support outbound without adding more ops or risk.
Problems we solve
When mailboxes are unstable, your whole business slows down
The real bottleneck isn't campaign ideas. It's spam folder landings, burned domains, constant warmup resets, and a decaying sender reputation pushing launches back.
Complete visibility into every mailbox you own with InfraSuite Analytics
Fleet overview
Your entire mailbox fleet, one table.
Every mailbox, live — health status, reply rates, bounce flags, and sent/received counts in a single view.
Included in every InfraSuite account
Smart filtering & organisation
Filter to problems. Organise by domain.
Segment your fleet by health status or bounce severity in one click — then drill into any domain to see every mailbox sorted in one view. Whether you're managing 50 mailboxes or 5,000, the workflow doesn't change.
Per-mailbox diagnostics
Diagnose any mailbox without opening a support ticket.
Click any mailbox to pull up 7-120 day trend charts for sent volume, reply rate, and bounce rate — alongside live SPF, DKIM, DMARC, and MX status. You'll know exactly what's wrong and when it started.
Included in every InfraSuite account
Plug-and-play integrations
Drops straight into the tools you already use.
Import your mailboxes into Instantly, Smartlead, or any Microsoft-compatible sequencer. Start warmup in the same tool you run campaigns from — nothing new to learn.
Outlook → Google tuned.
How it works
From new mailboxes to booked meetings.
InfraSuite stays under the hood. You keep using the tools you already trust while your mailboxes warm, send, and generate replies at scale.
Simple, transparent pricing plans
InfraSuite Bronze
10 domains + 990 mailboxes
($49.90 per domain per month)
2 × 30-min calls / month
Offers, list building, copywriting & AI — whatever you need.
Purchase domains separately.
InfraSuite Gold
20 domains + 1,980 mailboxes
($49.95 per domain per month)
2 × 1-hour calls / month
Offers, list building, copywriting & AI — whatever you need.
Purchase domains separately.
InfraSuite Platinum
40 domains + 3,960 mailboxes
($44.98 per domain per month)
1 × 30-min call / week
Offers, list building, copywriting & AI — whatever you need.
Purchase domains separately.
Starting out with fewer than 10 domains?
We work with operators at every stage. If you're earlier in the process or running a smaller operation, get in touch — we'll put together a custom order that fits your volume without locking you into a plan you'll outgrow.
Refer a friend. Grow for free.
Know someone else running cold email? Refer them and earn free mailboxes that expand your sending capacity — no extra spend required.
Share InfraSuite with someone you know
A fellow agency owner, an outbound operator, anyone running cold email who needs reliable sending infrastructure.
They sign up and become a customer
Once they're live on a plan, the referral is confirmed — no hoops, no complicated tracking.
You earn free mailboxes
Free mailboxes get added to your account, expanding your daily send capacity at zero extra cost.
Interested in referring someone?
See the full program details — earn rates, how long you keep your mailboxes, and how to get started.
Learn moreFrequently Asked Questions
Trusted by outreach teams worldwide
“Reply rates have held steady at 3-5% since we moved a good portion of our mailboxes to InfraSuite. Most of our clients campaigns are now built off of Microsoft mailboxes so we're happy to finally have some stability.”
Gainbridge Advisory
“We received our mailboxes in less than 11 hours which is refreshing to see. The experience so far has been great, highly recommend InfraSuite if you need a solid provider.”
Orrison & Co.
“Every inbox is still at 100% and we're only halfway through warmup. It's the first time I haven't been worried about whether the mailboxes will actually be ready when our campaigns go live.”
Deal Process Partners
“Moved from a different provider to Infrasuite a few months ago. Materially cheaper at our volume, deliverability held strong as we scaled sending, and the support team is fast and technical whenever we need help. Solid switch.”
Arbitrage Partners
“For the first time, I've had real success with cold email since switching to InfraSuite. Already planning to scale up and get my clients set up with them too.”
Evimero Partners
“Reply rates have held steady at 3-5% since we moved a good portion of our mailboxes to InfraSuite. Most of our clients campaigns are now built off of Microsoft mailboxes so we're happy to finally have some stability.”
Gainbridge Advisory
“We received our mailboxes in less than 11 hours which is refreshing to see. The experience so far has been great, highly recommend InfraSuite if you need a solid provider.”
Orrison & Co.
“Every inbox is still at 100% and we're only halfway through warmup. It's the first time I haven't been worried about whether the mailboxes will actually be ready when our campaigns go live.”
Deal Process Partners
“Moved from a different provider to Infrasuite a few months ago. Materially cheaper at our volume, deliverability held strong as we scaled sending, and the support team is fast and technical whenever we need help. Solid switch.”
Arbitrage Partners
“For the first time, I've had real success with cold email since switching to InfraSuite. Already planning to scale up and get my clients set up with them too.”
Evimero Partners
“Reply rates have held steady at 3-5% since we moved a good portion of our mailboxes to InfraSuite. Most of our clients campaigns are now built off of Microsoft mailboxes so we're happy to finally have some stability.”
Gainbridge Advisory
“We received our mailboxes in less than 11 hours which is refreshing to see. The experience so far has been great, highly recommend InfraSuite if you need a solid provider.”
Orrison & Co.
“Every inbox is still at 100% and we're only halfway through warmup. It's the first time I haven't been worried about whether the mailboxes will actually be ready when our campaigns go live.”
Deal Process Partners
“Moved from a different provider to Infrasuite a few months ago. Materially cheaper at our volume, deliverability held strong as we scaled sending, and the support team is fast and technical whenever we need help. Solid switch.”
Arbitrage Partners
“For the first time, I've had real success with cold email since switching to InfraSuite. Already planning to scale up and get my clients set up with them too.”
Evimero Partners