Premailing / Maildoso

Maildoso provides outbound mailboxes optimized for cold email campaigns with automatic setup of DNS records (SPF, MX, DKIM). The platform features IP rotation across 35 global data centers, inbox placement tests every three days, automatic cool-down for burned mailboxes, and protection of primary domains. Maildoso starts at just $0.49 per mailbox and includes features like one-click platform integration and expert deliverability consulting.