ElephantsPlan the route. Validate both sides. Migrate with evidence.
Connect a compatible hosted IMAP service and migrate selected mailboxes into prepared Microsoft 365 destinations with monitored, resumable processing.
Migration orchestration—not permanent data storage.
From connection to verified results
IMAP source requirements
The provider must expose a resolvable IMAP hostname and permit mailbox or app-password authentication. Implicit TLS on port 993 with a valid server certificate is the recommended configuration.
Microsoft 365 readiness
Map each source mailbox to a licensed Exchange Online destination. Confirm mailbox creation, capacity and effective application access before starting the batch.
Checkpointed mailbox transfer
ElephantsData records per-user progress and durable checkpoints so supported retries can continue from accepted work. Exception reports keep skipped or failed items visible for review.
Protocol scope and limitations
IMAP exposes messages and folders, not a complete collaboration account. Contacts, calendars, rules, delegates, applications and native online archives are outside a standard IMAP copy.
Questions to answer before migration
Is IMAP to Microsoft 365 email migration currently free with ElephantsData?
ElephantsData is currently free to use. Provider licensing, storage, API, network and other third-party charges may still apply.
How should I start a IMAP to Microsoft 365 email migration project?
Confirm the supported route, prepare both providers, map each selected source to an explicit destination, run preflight checks and validate a representative pilot before expanding the batch.
Does a successful connection mean the workload is ready?
No. Authentication proves only that a connection can be established. Workload preflight must also verify permissions, destination provisioning, licensing, quota and mappings.
How should migration results be validated?
Review per-user transferred, skipped and failed outcomes, inspect representative destination data and document any route limitations before approving the migration.