Cigati Email Migrator vs Stellar Migrator for Exchange

Cigati Email Migrator transfers PST and OST files and IMAP mailboxes to file formats and email platforms. It supports single and bulk migrations, including importing IMAP accounts in batches from a CSV file. Destinations include PST, PDF, Office 365, IMAP, Google Workspace, and Microsoft 365/Outlook; IMAP migrations also support additional export formats. The product says it preserves folder structure, email properties, attachments, contacts, calendars, and tasks. Users can filter by date range and folders, and PST/OST jobs can also filter by item type. Duplicate detection compares subject, sender, recipient, CC, and body, while an option skips items transferred earlier. Migration reports list successful, skipped, and failed items. PST/OST migrations can export contacts as VCF and calendars as ICS, and split output PST files by a user-defined size. Preview is available for a single selected PST/OST file and for IMAP mailboxes after a successful connection. The free demo transfers only the first 100 emails per folder; the page does not state a time limit. For Microsoft 365 IMAP migration using modern authentication, administrator consent is generally required, though user-level credentials may work where supported. Cigati says its products process data locally.

Stellar Migrator for Exchange moves mailboxes among Exchange Server and Microsoft 365 environments, including transfers between Microsoft 365 tenants. It supports primary, shared, and archive mailboxes as well as public folders, and can run cutover, staged, or hybrid migrations all at once or in batches. Delta migration transfers new or changed data after an initial move. Up to 10 mailboxes and their items can be migrated simultaneously. Users can match mailboxes automatically or map them manually, including with a CSV file, select folders such as email, contacts, calendars, tasks, notes, and journals, and filter mail by date range. Failed or incomplete migrations can be rerun, with automatic retries set from 1 to 5 attempts. It runs on Windows and requires at least 8 GB of memory. The free trial covers 2 mailboxes and includes all migration capabilities; Mailbox Pricing is $250, paid once, billed $10 Per Mailbox, with quantity selected on the page and one license per source mailbox.