SMTP Email Sender
Bring your own SMTP inbox for maximum deliverability. ColdMailer integrates with any SMTP provider.
Send Cold Emails from Your Own SMTP
ColdMailer lets you bring your own SMTP accounts — Gmail, Outlook, SendGrid, Amazon SES, or any provider. Your emails, your reputation, your control.
Why BYO SMTP Matters
Shared sending infrastructure means shared reputation. One bad actor can tank your deliverability. With ColdMailer, you send from your own domains and IPs.
- Connect any SMTP provider in seconds
- Rotate between multiple inboxes automatically
- Built-in domain warm-up for new accounts
- SPF, DKIM, DMARC verification & monitoring
- Per-account sending limits and schedules
Start Free Today
No credit card required · 100 free emails/month