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About

MailFlow Monitoring

Round-trip SMTP and IMAP email infrastructure monitoring service. Real-time alerts for email delivery issues affecting your business.

Part of the DuoCircle LLC Family

MailFlow Monitoring is built by DuoCircle LLC, an email security company founded in 2014. We provide comprehensive email security solutions — from DMARC monitoring and SPF management to phishing protection and outbound email relay — trusted by businesses of all sizes worldwide.

Headquarters

1160 Battery Street East, Suite 100
San Francisco, CA 94111

Frequently Asked Questions

What is MailFlow Monitoring?

Round-trip SMTP and IMAP email infrastructure monitoring service. Real-time alerts for email delivery issues affecting your business.

Who is behind MailFlow Monitoring?

MailFlow Monitoring is a product of DuoCircle LLC, an email security company founded in 2014 and headquartered in San Francisco, CA. DuoCircle provides email security solutions trusted by businesses worldwide.

How do I contact MailFlow Monitoring support?

You can reach our support team at support@duocircle.com or call +1-855-700-1386. For sales inquiries, email sales@duocircle.com.