About
Tenant Migration
Secure email queuing service for Office 365 and Google Workspace tenant migrations. Prevents email loss with 45-day retention and Message Replay technology.
Part of the DuoCircle LLC Family
Tenant Migration 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
Contact
DuoCircle Product Family
Alumni Forwarding
Enterprise Email Forwarding for University Alumni
AutoSPF
Automatic SPF Flattening & Email Authentication Management
DMARC Report
DMARC Reporting & Email Authentication Management
InboxIssue
Email Deliverability Testing
MailFlow Monitoring
Round-Trip Email Infrastructure Monitoring
NuReply
AI-Powered Cold Email Outreach
OutboundSMTP
Enterprise SMTP Relay Service
Phish Protection
Phishing Protection & Email Security
Frequently Asked Questions
What is Tenant Migration?
Secure email queuing service for Office 365 and Google Workspace tenant migrations. Prevents email loss with 45-day retention and Message Replay technology.
Who is behind Tenant Migration?
Tenant Migration 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 Tenant Migration support?
You can reach our support team at support@duocircle.com or call +1-855-700-1386. For sales inquiries, email sales@duocircle.com.