Built for Microsoft 365 Admins

Enterprise Migrations & Secure Mailflow. Zero downtime.

Hermes365 migrates mailboxes into Exchange Online, from any IMAP or POP3 server and between Microsoft 365 tenants, and generates your SEPPmail and HIN mail flow setup.

99.98%Migration success rate
24/7Enterprise support
ExchangeSource tenant
Microsoft 365Microsoft 365
Tenant-to-tenant migration
Delta sync before cutover
IMAP / POP3 import
Migration paths

Every migration path. One platform.

From hosted IMAP mailboxes and from other Microsoft 365 tenants into Exchange Online, plus secure mail transport.

Hermes365 Tenant

Exchange & Tenant Migrations

Move mailboxes between Microsoft 365 tenants for mergers, acquisitions and carve-outs: Exchange Online to Exchange Online, read-only on the source side.

Hermes365 Essentials

Legacy & Consumer Import

Batch-based imports from any IMAP or POP3 server (hosting providers, Gmail and Google Workspace via IMAP) directly into Exchange Online, resumable at any point.

Hermes365 Secure

SEPPmail & HIN Integration

Generate a ready-to-run Exchange Online script for connectors, transport rules, Enhanced Filtering and ARC sealing that integrates SEPPmail or HIN into your tenant.

How it works

Three phases to a complete cutover

A clearly structured process built on thousands of enterprise migrations.

Engineered by Swiss Microsoft MVPs

Step 01

Assessment

Automated analysis of source and target tenant: mailbox sizes, permissions, domains, and risks.

Step 02

Migration

Batch-based, delta-synchronized migration with live monitoring and automatic retry on failure.

Step 03

Cutover & Security

Final delta sync and controlled cutover per mailbox; source credentials are destroyed and the SEPPmail/HIN setup is one script away.

Ready for a risk-free migration?

Talk to our team or start your free assessment for your Exchange or Microsoft 365 migration right away.