Smtpfox - Mailboxes for Cold Outreach – Dedicated SMTP infrastructure for reliable cold email sending

Summary: Smtpfox offers dedicated SMTP mailboxes with individual IPs and sending servers designed for cold email outreach. It automates DNS authentication setup and provides built-in IP warming to ensure high deliverability without shared server risks.

What it does

Smtpfox provides dedicated servers per domain with automatic DKIM, SPF, and DMARC configuration, eliminating shared IP issues common in cold email providers. It supports IMAP/SMTP and includes IP warming to build sender reputation over time.

Who it's for

It is intended for users managing multiple cold email mailboxes who require reliable deliverability and control over sending reputation.

Why it matters

It solves deliverability problems caused by shared IPs and complex DNS setups, ensuring emails avoid spam filters and maintain sender reputation.