We’re
Maildoso, and we build infrastructure for cold outreach. Our platform isn’t a strategy service - it’s a technical solution that helps B2B teams set up and run large-scale cold email campaigns without manual setup work. Instead of registering domains, configuring DNS records, and creating Google Workspace accounts one by one, users can launch up to 1,000 fully configured mailboxes in under 10 minutes.
Each mailbox comes ready for cold outreach - SPF, DKIM, and MX records are already in place. You also get domains included, and if you leave, the domains are yours to keep. For warming up inboxes, we use browser-based AI agents (not traditional IMAP connections), which mimic real inbox activity to help messages land in the inbox instead of spam. Our infrastructure is used to send 20,000+ cold emails per day across many campaigns, with built-in IP rotation to maintain high deliverability over time.
Whether you’re running outbound email for sales, hiring, or partnerships, Maildoso handles the backend infrastructure so you can focus on writing better emails, not configuring settings.