ColdInfra is a platform that helps you get official Microsoft Outlook inboxes for just $1.25/inbox compared to the original price of $7.2/inbox.

This allows you to do cold email outreach and get more customers for your company without breaking the bank and get an ever greater ROI.

Yes. They are 100% real.

We will provide you emails and passwords which can be used to log in as well directly to Microsoft Outlook.

We are registered Microsoft cloud service partners.

If you get Microsoft Inboxes through us, you will get the greatest ROI possible because Microsoft is the best for high volume outreach in terms of ease of use, cost and deliverability.

You can see a breakdown of the different infrastructure available and the pros and cons of each in the video on this page and a section made specifically for this.

NO.

We will take care of all that for you and add the senders directly to your email sending platform (or share them via a CSV file with email and password is that is what you prefer)

In Outlook, you can create upto 100 inboxes per domain safely which greatly maximises savings as you don't need to buy 30 - 50 domains which you need when using Google.

If you want to use more than 1 domain per 100 inboxes, that is totally fine. You can use as many domains as you want.

Yes.

You can use any domain you own for creating the mailboxes.

If you want, we can buy domains for you for $15/year but that is OPTIONAL.

Microsoft warm up is significantly faster than Google and 99% people face 0 issues with a 3-5 day warm up period.

Google takes 14-28 days for reference.

This means you can start your campaigns faster and make money faster.

You can use any email sending software for warm up, they all work almost the same (yes that is coming from someone who owns an email sending software himself).

Send 5 emails a day for 3-5 days and you should be good :)

Yes, no one except you can use them.

They are 100% private as we literally create them on your domain (not giving you some crappy ones)

Yes. If any email infrastructure provider says no he is lying to you.

If I use any service and send phishing links to a random list, the domain will get burnt.

Microsoft is more lenient than Google so the chances of burning is significantly lower but it is still there.

It depends mostly on what you are sending in your emails and the quality of your list.

Just buy a new domain it is cheap.

We will give you new inboxes and replace the burnt domain at 0 cost.

I would recommend you to have 5-10 warm up emails going daily.

Along with this, you can send 5-10 emails per inbox safely.

You can go higher as I know people who send like 20-40 a day with good deliverability but I like to stay on the safer side.

This is still good enough as you can send 15000 emails with just 1 domain and 100 inboxes per month (and make so much more than $135 which is what it will cost you).

Yes. If you don't want to give us your money, we are the last people to desire it.

No contracts, cancel any time with the click of a button.

Yes, you can add it to any email sending tool like Instantly, Smartlead, Manyreach, PlusVibe (Pipl AI), Email Bison etc.

If you want, we can add them directly to your tool if that's what you prefer.

Just share your email and password and we will take care of it.

No.

We provide real Outlook accounts which you can connect via oAuth which means 0 disconnects.

No.

Every domain is isolated and we don't use a shared IP.

Most inbox providers either provide:

1. Custom SMTP servers

For the inboxes which increases their profit margins but destroys your deliverability.

This is because everything is using the same IP address and sending reputation of custom SMTP servers is usually low cause your prospects use Gmail/Microsoft to read emails and these providers don't like custom SMTPs.

We use REAL Microsoft Outlook accounts and not some random SMTP server located in a village in Bangladesh lol.

2. Use shared IPs

Most custom providers who provide valid Workspace or Outlook accounts, use shared IP addresses.

This means hundreds of thousands of emails are going from the same IP address.

If just one user starts sending spam, the IP gets blacklisted.

Email providers like Google and Microsoft think this IP address is used by scammers and put your emails which might be perfect in the spam box as well.

We provide a separate IP per domain which means there is 0 risk of this happening to you?

1. Pricing

Most resellers offer inboxes for $3 to $5 and we do too BUT...

We have a special offer for those who buy the moment they open the page.

If you use CODE - ACTIONTAKER

A massive 68.75% discount is applied which means the cost of an inbox is just $1.25

For reference, if you buy the same thing from Microsoft, it will cost you $7.2

2. Deliverability

We do not use shared IP addresses which means deliverability will be 10/10 always

3. Ease of use

You don't have to worry about figuring stuff out.

We will take care of the technical side of things and add the inboxes directly in your software so you have 0 headaches.

4. Experience

Most resellers make their money from selling inboxes.

I make most of my money from cold outreach.

I work with 50+ B2B companies as of Oct 2025 and do outbound on their behalf.

They literally trust us with their survival cause we know what we are doing.

We have worked with companies of all sizes (including those with 10000+ employees who get shipping contracts from the US Navy).

I do this daily, have tried every method of outbound and know what works.

Probably the only person in the industry who does this.

You can use the Whatsapp chat widget at the bottom right corner of the screen and reach out.

Price per inbox will be slightly higher but still cheaper than other providers/Microsoft.

I promise you that there will probably be cheaper vendors with bigger bolder claims and stuff.

What I will also promise you, the best ROI you will get here.

Sure you can maybe save $50 choosing someone else but will that be worth it if it costed you 1000s of $ in potential revenue?

What you pay and what you get, we will ensure it's the best in the world.

After placing your order, you will get your inboxes in 1-2 days MAX (99% orders are delivered in 24 hours).

1. Place an order at http://coldinfra.sale-gen.com/order

2. Fill out a form explaining what domain(s) you want to use (and inbox names too if you have any preference)

3. Wait for us to process the order

4. Paste some text in your domain registrar (like Namecheap, Godaddy, Cloudfare, Porkbun etc.) so we can create the inboxes

5. Get inboxes in 24 hours added to your software or in a CSV file

In the B2B industry, the average ROI with cold email is 36X.

Yes, on AVERAGE a company that invests $1 gets $36 out.

The average cold emailer doesn't know what they're doing and is using the wrong system etc..

You are using infrastructure better than the average cold emailer, does that not imply your results will be better than the average cold emailer?

That means you will get an ROI greater than 36 times hypothetically.

Numbers don't lie, I have created an ROI calculator.

Go and plug in your business numbers and see how much you make and save if you choose us :)

Click on the Whatsapp chat widget at the bottom right corner of the screen. I will get back to you there :)