The Best Cold Email Inboxes On The Internet

*Agencies that print sales calls with cold emails secretly use these inboxes.

Mailscale is a software that lets you instantly generate inboxes made for cold emailing.
Finally flood your sales calendar and send emails that are guaranteed to be opened.

Plug Mailscale inboxes into any email sending tool
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Mailscale <> Clay Operator Special Offer

Claim the 3-months special offer, save 20% and get the Clay Handbook.

Grab it while available, you won't find this offer anywhere else on our website.

Solopreneur - 15 Inboxes

If you're looking to book 2-5 sales calls a month - or your target market is small.

Recommended to contact ~2,000 prospects a month.

$318

15 Email Inboxes (3-Months)
You have 15 inbox credits. You can also generate less inboxes and you can replace or delete them anytime.
Get Domains Easily Inside
To create inboxes, you can buy domains inside of Mailscale.
You can create up to 5 inboxes per domain.
So for this plan, you need a minimum of 3 domains.
Domains start at $9/year and you own them in case you want to discontinue Mailscale.
Fast & Easy 5-Minute Setup
Plug Them Into Any Email Sending Tool
You get the login credentials of your email accounts.

So you can plug them into any email sending tool (Mailshake, Lemlist, Woodpecker, Reply, Outreach, Apollo, etc.)

We do recommend Instantly or Smartlead. They have the best deliverability and allow you to add unlimited inboxes.
Automated DNS/DKIM/SPF Records For Pristine Deliverability
Checklist Included To Always Land In The Inbox
24/7 Live Support Ready To Help
Managed Infrastructure With Deliverability Guarantee
We fully own, manage and handle our infrastructure through IP rotation and blacklist monitoring so you don't have to worry about landing in the spam.

If at any point your deliverability suffers or domains get blacklisted, we unlist them for you in 14 days - If we ever fail, we will personally pay for your new domains.
Bonus: Full Cold Email Course
We fully own, manage and handle our infrastructure through IP rotation and blacklist monitoring so you don't have to worry about landing in the spam.

If at any point your deliverability suffers or domains get blacklisted, we unlist them for you in 14 days - If we ever fail, we will personally pay for your new domains.
Bonus: Clay Handbook
We fully own, manage and handle our infrastructure through IP rotation and blacklist monitoring so you don't have to worry about landing in the spam.

If at any point your deliverability suffers or domains get blacklisted, we unlist them for you in 14 days - If we ever fail, we will personally pay for your new domains.
Business - 50 Inboxes (Most Popular)

If you're looking to book 10-30 more sales calls a month with a normal target market size.

Recommended to contact ~10,000 prospects a month.

50 Email Inboxes (3-Months)
You have 50 inbox credits. You can also generate less inboxes and you can replace or delete them anytime.
Get Domains Easily Inside
To create inboxes, you can buy domains inside of Mailscale.

You can create up to 5 inboxes per domain.

So for this plan, you need a minimum of 10 domains.

Domains start at $9/year and you own them in case you want to discontinue Mailscale.
Everything from the solopreneur plan
Enterprise - 200 Inboxes

If you need to scale your offer and make it impossible not to book 30-100+ sales calls a month.

Recommended to contact ~30,000 prospects a month.

$798

200 Email Inboxes (3-Months)
You have 200 inbox credits. You can also generate less inboxes and you can replace or delete them anytime.
Everything from the business plan, plus:
1:1 Deliverability Consultant To Monitor Your Email Health
Add More Inboxes At $1/Month Per Inbox (Great For Lead Gen Agencies)

What agency veterans that never run out of leads are doing differently to you

What's the secret to getting hundreds of business owners interested in your service right now?

You just have to put yourself in front of enough buyers

The simple reason you’re not getting enough clients is that you’re not being seen.

Good News: Your next 100 clients are literally an email away.

Bad News: Sending cold emails at scale is a hassle.

To not land in the spam, you need to create a lot of them and spread your volume.

The 2 Biggest Cold Email Obstacles:

1. Expensive

To land in the inbox at scale, you need 50+ email accounts which will cost you $400/month with Google/Outlook.

2. Technical Hassle

It takes days to setup the needed DNS records to land in the inbox (DKIM/DMARC/SPF) for each email account.

5x cheaper and 50x faster.

Mailscale automates
email inbox creation
faster & cheaper than anything else on the market.

Save hours of setting up and managing email inboxes.

Instantly generate email accounts, guaranteed to be seen by your prospects.

Book more sales meetings while saving 80% of costs.

The old way

Manually set up domains, email accounts, DMARC, DKIM, SPF, domain forwarding, email forwarding.

The new way

Let Mailscale generate email accounts for you, add all the needed DNS records, and add them to your email sending tool with a single click.

Testimonials

1000+ customers with a competitive advantage

Mailscale helped more than 1000 agency owners, freelancers and software founders to get more clients.

Here's what they say:

Email accounts

Effortlessly generate email accounts

Buy domains inside of Mailscale, generate mailboxes and instantly add them to your email sending tool.

No more manual work

Save 6 Hours of Manual Work

Spend 5 minutes with Mailscale instead of 6+ hours to set up your email inboxes.

-> More time for things that actually move the needle.

Don't overpay

Save $1000 in the next 3 months

Save 4-5x the costs in comparison to other email providers.

-> More budget to hire, buy emails or to buy a guitar.

Deliverability Guarantee

Reach Inboxes.
Not Spam Folders

Mailscale guarantees 95-100% deliverability.

But not only that.

If at any point, your domains get blacklisted as a result of people marking your emails as spam, we will get them unlisted for you.

If we ever fail within 14 days, we will replace your domains at no costs.

Frequently asked questions

What is Mailscale?

Mailscale is a tool that automates the creation of company email accounts for cold outreach.

Here are your benefits:

- Generate 50+ inboxes in 5 minutes (instead of 6+ hours with Google or Outlook)
- Save 80% of costs with inboxes as low as $1/month instead of $7.20
- Get the best deliverability (we manage it for you and guarantee it)
- Never get blocked again (Google & Outlook don't allow you to cold email)

As a result, you can send more emails that land in the inbox and get more leads.

Why do I need so many email accounts?

To not land in the spam, an email account should send no more than 20-30 emails per day.

Therefore, the only way to scale your outreach is by having lots of email accounts.

Example:

If you have 50 email accounts, you can target 5000-10,000 businesses a month (with a sequence of a few emails).

This is how you can get 50-100+ businesses interested in your offer.

What's the result for my business?

Usually, businesses do email outreach in order to book sales calls.

By scaling your outreach with 50 or 200+ email accounts, our customers consistently book 30+ sales appointments and get 5+ clients.

Equally, a freelancer/SAAS with lower ticket offers can use email outreach to get hundreds of signups/customers.

Is this for me?

Cold outreach will work for you if you're targeting businesses.

Therefore, any solopreneur, freelancer, agency owner or software founder can benefit from reaching out to their dream customers.

Inside of Mailscale's business plan, you'll get a full cold email course including tutorials on how you can get 10,000+ emails in any niche.

How does cold outreach work?

Mailscale provides you with email accounts. Think of them as your soldiers.

But you still need other tools such as an email sending tool like Instantly/Smartlead to send the emails.

Also, you need to get emails of your dream customers with tools such as Apollo.

In order to help you, we provide you with a full cold email course including how to get 10,000+ emails, set up the emails, write high converting emails etc.

Why can't I use Activecampaign/ Mailchimp / Mailgun / Sendgrid/ Convertkit etc.?

All of these providers are for 'transactional emails' only.

Meaning, if you have an email list of subscribers that expect your email.

Cold outreach is against their policies and will get you banned.

How is the deliverability?

The core mission of Mailscale is for you to be seen.

With our dedicated email infrastructure, our customers enjoy 95-100% B2B deliverability scores (Google Workspace & Office 365 Outlook) which you can verify with the warmup scores.

In fact, we guarantee this deliverability and if your domains ever get burned as a result of prospects marking your emails as spam, we will get them unlisted for you. If we ever fail within 14 days, we will replace your domains at no cost.

What's the difference to Google Workspace/Outlook?

The end result is the same: Company email accounts.

But when using Google/Outlook, it would take you 12+ hours of technical setup (DKIM/DMARC/SPF etc.) to set them up and optimize for deliverability.

Also, it would cost you $400+/Month for 50 email accounts.

With Mailscale, all it takes is 5 minutes to fill out a form and you save 3-5x the costs.

Do I need to buy domains with you?

In order to create email accounts, you need to buy additional domains (also if you don't use Mailscale)

That's because you can't set up 50 same emails on a single domain, you need to spread your volume.

Currently, we only offer for you to buy them inside of Mailscale since we add all the DNS records for you automatically.

You can create up to 5 emails per domain and the costs are $9-$13/year per domain.

When setting up 50 email accounts, this will effectively only add $7-$10 a month and these are your domains in case you want to cancel Mailscale in the future.

Can I bring my own domains?

Currently not. As of now, our customers see Mailscale as a way of scaling outreach further if they already have emails and buy domains inside until they can transfer their old ones.

Can I upgrade anytime?

Yes, of course.

You can upgrade anytime no matter if you're on the monthly or yearly plan.

What's the process?

It's a simple process that takes you 3-5 minutes only:  

1. Pick your plan
2. Purchase domains inside of Mailscale
3. Fill out a form with your desired email usernames
4. You get a CSV file with all email accounts that you can import with a single click into your email sending tool.

As with all providers, we recommend a warmup period of 1-2 weeks before starting to send campaigns.

How does the email infrastructure work?

Using a self-hosted email infrastructure is nothing new.

Large companies with thousands of employees such as TikTok don't use Google or Outlook (Also for security reasons).

They have their own infrastructure and of course, their emails land in the inbox when contacting businesses or sending emails between each other.

The only thing that's new here is that Mailscale finally makes this accessible to small business owners like yourself.

We're currently the only provider that owns the full infrastructure including SMTP servers, IP pools and more (While some others just resell accounts)

As a result, we can provide you with the best deliverability by being able to replace IPs in an instance for example.

Our infrastructure is optimized for cold email outreach and we have a full automated monitoring system that scans for blacklisting, reputation, spam reports, bounces and more so you don't have to deal with any of that.

How many emails can I send with them?

While there's technically no limitation, you can negatively impact your reputation if you send too many emails (As with every provider).

We recommend to send a maximum of 30-50 emails per email account per day.

Which email sending tools do you integrate with?

You can integrate the email inboxes you create with Mailscale with virtually every cold email sending tool.

That's because every cold outreach tool usually allows you to add self-hosted email accounts (IMAP/SMTP).

Mailscale provides you with all the login credentials that you need.

Example Sending Tools: Instantly.ai, Smartlead.ai, Apollo.io, Success.ai, Reply.io, Lemlist, Mailshake

Tip: If you haven't decided on a sending tool yet, we highly recommend Instantly & Smartlead (They allow you to add unlimited email accounts at no fee).

How does the guarantee work?

We guarantee 95-100% deliverability and if your domains ever get burned as a result of prospects marking your emails as spam, we will get them unlisted for you. If we ever fail within 14 days, we will replace your domains at no cost.

We also guarantee that you'll book 5 more sales calls in 30 days or you don't pay when using our business plan or higher and sending 10,000 cold emails following our deliverability checklist which you'll receive.

How do I cancel my subscription?

You can easily cancel your subscription anytime by clicking here.

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Learn how to:

- Get more clients than you can handle
- Reach 10,000 dream clients a month
- Automate the system for less than $400

This strategy helped us get 540 B2B customers in 3 months