Mailboxes built for outbound

Connect high-reputation mailboxes that won’t burn out in the first month and say goodbye to spam issues

▶️ watch the product video

4460+

clients including Deel, Tiktok, Apollo, Zoominfo

90%

deliverability rate thanks to IP rotation

Get started

10m+

emails sent daily from 200k+ active mailboxes

4460+ clients

including Deel, Tiktok, Apollo, Zoominfo

Launch outbound with us

Send emails to thousands of leads

Cold email outreach is the most effective sales channel for B2B companies in the U.S.

Recruiting IT specialists? Share your case studies with HRDs at tech companies!

Do you run a video production studio? Show your video samples to all creative directors in the fashion & apparel industry!

Book a demo ↗

Our product

We provide mailboxes for your cold outreach that stay invisible to spam filters.

Spin up hundreds of mailboxes in just 10 minutes, connect them to Instantly/Smartlead and get reply rates that are 20–40% higher!

▶️ watch the product video

How it works

Register dozens of domains

Register domains directly through our interface — we provide them for free!

  • website.com
  • onepage.com
  • example.com

➡️

Type alias to generate mailboxes

Type names to generate mailboxes (SPF, DMARC and DKIM are configured automatically).

  • john@
  • mary@
  • js@

➡️

Mailboxes will be ready in 10 minutes

Mailboxes will be ready in 10 minutes – export them to use in Smartlead, Instantly, or any other outreach tool.

  • john@website.com
  • mary@onepage.com
  • js@example.com

No more spam issues!

If you’re not sending images or links, your deliverability rate can hit 95%!

We’ve got your back with IP rotation — if one of them runs into trouble, we’ll automatically replace it. You won’t notice anything happening, and your deliverability will stay consistently high!

Mailboxes for just $1.8!

We offer some of the most competitive terms on the market — starting at $1.8./mo with a quarterly plan. On top of that, you get domains for free 🎁

Let’s compare purchasing 400 mailboxes in Maildoso and Google Workspace.

Maildoso


• $1.80 per mailbox;

• Domains for free;

• Great deliverability across all types of mailboxes;

• 10 minutes for complete set up;

Total: $733

Google Workspace


• $7.20 per mailbox;

• ~$10 per domain;

• Possible delivery issues with Outlook;

• Over 10 hours to register SPF, MX, and DKIM records for each domain and manually set up mailboxes;

Total: $3,880 (and tons of stress)

Case studies

Nordic Nexus

S Collective

Cold Emails Studio

KP Business Development

Content Marketing Media

Saav Leads

Looks impressive?

Maildoso is a game-changer for deliverability. Use it personally!

Dhruv Patel

Co-founder of Saleshandy

Dhruv Patel

co-founder of Saleshandy

Pricing

32 mailboxes + 8 domains for free

$100/mo

equals $3.1 per mailbox

Billed Quarterly

• SPF, DKIM, DMARC, MX records setup – set up all mailboxes in 10 minutes;

• 3 master inboxes and domain redirect setup – manage replies efficiently;

• Mailbox reputation checks and daily inbox placement checks – monitor the health of your infrastructure.

Best for solopreneurs and freelancers

68 mailboxes + 17 domains for free

$166/mo

equals $2.4 per mailbox (–27%)

Billed Quarterly

• SPF, DKIM, DMARC, MX records setup – set up all mailboxes in 10 minutes;

• 6 master inboxes and domain redirect setup – manage replies efficiently;

• Mailbox reputation checks and daily inbox placement checks – monitor the health of your infrastructure.

Best for small businesses

400 mailboxes + 100 domains for free

$733/mo

equals $1.8 per mailbox (–70%)

Billed Quarterly

• SPF, DKIM, DMARC, MX records setup – set up all mailboxes in 10 minutes;

• 10 master inboxes and domain redirect setup – manage replies efficiently;

• Mailbox reputation checks and daily inbox placement checks – monitor the health of your infrastructure.

Best for large companies and lead gen agencies

Need more mailboxes?

Submit the form to get a custom offer designed for your needs

30-days money-back guarantee

if you’re not happy with the results, we’ll refund you for the mailboxes!

NB: The cost of domains is non-refundable – but you’ll keep full ownership and can continue using them even after cancelling your subscription.

Use our free resources!

Premium AI Warmup

AI mimics human behaviour, keeping campaigns hidden from spam filters.

Read more →

Deliverability guide

Best practices for improving deliverability in a single article.

Read more →

Knowledge base

All the answers about the warm-up filter and master inbox.

Read more →

Guide for beginners

Step-by-step algorithm for launching your first campaign.

Read more →

Slack community

A community of 1,300+ professional cold emailers.

Read more →

Webinars

Check out the recordings of webinars or sign up for the next one!

Read more →

Expert pool

Experts who can help you with outbound

Read more →

Copywriting guide

Simple rules to make your copy more native

Read more →

Webinars

Check out the recordings of webinars or sign up for the next one!

Read more →

Book a demo with our experts


FAQ