Cold Email InboxesBuilt for Deliverability
Enterprise Mailboxes Built for Cold Email and Inboxing Across all ESPs
Trusted by 140+ Agencies, GTM Engineers & Startups
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 & lead gen agencies
Running multiple client accounts and need reliable Outlook capacity without having to build a stable infrastructure yourself.
In-house sales & recruiting teams
Outreach is a core channel for pipeline or hiring, and you want Outlook mailboxes that keep up with quota without constant replacements.
Founders & GTM leaders
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.
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.
Instantly
Smartlead
EmailBison
PlusvibeInstantlySmartleadEmailBisonPlusvibe
Outlook
GoogleOutlook → 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
Priced per domain — scale to as many as you need
Custom
Tell us your volume and we'll build a plan around it
Build Your Mailbox Infrastructure
Set the volume you want to send per day, and we'll show you the domains and mailboxes it takes to get there. When you're ready, check out and start creating your mailboxes.
Volume always rounds up to full domains of 49 mailboxes.
You'll need
5 domains
Monthly cost
$225
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
Trusted by 140+ Agencies, GTM Engineers & Startups
“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