10M+
emails sent per day
4.7
G2 rating with 138 reviews
400k+
mailboxes managed
Trusted by 5,000+ Companies!
Trusted by 5,000+ companies!
Achieve 95% Deliverability
We provide reputable mailboxes and domains built specifically for outreach and optimized for deliverability — so your emails actually land in the inbox.
Set Up Domains and Mailboxes in Under 10 Minutes
Set up mailboxes in under 10 minutes
Step 1
Register domains directly in our dashboard (or connect your own ones)
Step 2
Enter mailbox names – SPF, DKIM, and DMARC are auto-configured
Step 3
In 10 minutes, your mailboxes are ready to export and use with any outreach platform
Step 4
Set up integration with popular platforms – Instantly, Smartlead, Saleshandy, Apollo, and Lemlist.
Step 1
Register domains directly in the dashboard (or connect your own ones)
Step 2
Enter mailbox names – SPF, DKIM, and DMARC are auto-configured
Step 3
In 10 minutes, your mailboxes are ready to export and use with any outreach platform
Step 4
Set up integration with popular platforms – Instantly, Smartlead, Saleshandy, and others
Automate with API
Connect Maildoso to any service and create mailboxes automatically
Automate with MCP
Connect Maildoso to any LLM or AI agent and create mailboxes through prompts.
Automate with API & MCP
Connect Maildoso to any service and create mailboxes automatically!
Already Have Domains? Connect Them to Maildoso!
Add them to your dashboard or reach out to our support team for assitstance (and if you don’t have any domains yet, you can register them with us in just 5 minutes).
You can set up domain redirects in just a few clicks and always know whether a domain is active or blocked, plus how many mailboxes are linked to it.
Why Choose Maildoso?
Connect your mailboxes in one click!
No more downloading or importing. With the click of a button, your mailboxes automatically sync with Instantly, Smartlead or EmailBizon.
Connect your mailboxes in one click!
No more downloading or importing. With the click of a button, your mailboxes automatically sync with Instantly, Smartlead or EmailBizon.
Your primary domain is safe!
We keep it securely protected behind CAPTCHA — bots and scanners won’t be able to link it to your secondary domains.
Your primary domain is safe!
It is securely protected behind CAPTCHA — bots and scanners won’t be able to link it to your secondary domains.
Deliverability consulting
Having trouble with deliverability? Our cold email experts are here to help!
We’ll review your campaigns, run deliverability tests, and check your copy for both spam triggers and SPINTAX-related problems.
Deliverability consulting
Having trouble with deliverability? Our cold email experts are here to help!We’ll review your campaigns, run deliverability tests, and check your copy for both spam triggers and SPINTAX-related problems.
Mailboxes for Just $1.9
We offer the lowest prices on the market — starting at just $1.9/month!
You can choose between reliable SMTP inboxes or official Google Workspace accounts with a business license.
Case studies
Nordic Nexus
S Collective
Cold Emails Studio
KP Business Development
Content Marketing Media
Saav Leads
Maildoso Deliverability Stats
Real performance data (open rates, reply rates, positive replies) from our clients — tested at scale and compared directly to Google Workspace.
Maildoso is a game-changer for deliverability. Use it personally!
Dhruv Patel Co-founder of Saleshandy
Maildoso is a game-changer for deliverability. Use it personally!
Dhruv Patel Co-founder of Saleshandy
Use Our Free Resources!
Deliverability guide
Best practices for improving deliverability are all in one single article
Deliverability guide
Copywriting guide
Guide for beginners
Knowledge base
Slack community
Webinars
Expert pool
Bonus program
Product updates
Book a Demo with Our Experts
Book a demo with our experts
FAQ
FAQ
BacklinkSwappers, inc.
1390 Market Street Suite 200 San Francisco, CA 94102