MailJerry vs Stellar Migrator for Exchange

MailJerry is a cloud tool for moving email data directly between providers. It transfers messages, folders, drafts, labels, and sent objects, and says it works with all IMAP providers; named services include Gmail, Microsoft 365, Exchange, Yahoo, GMX, and iCloud. Bulk migration can handle multiple mailboxes, with CSV upload available on paid plans. Paid features can synchronize mailboxes, transfer new messages automatically, or back up email on daily, weekly, or monthly schedules. Controls include date-range filtering, bandwidth throttling, migration status details, and automatic reconnection after a server interruption. MailJerry says email data is encrypted, message contents are not readable by the tool, and messages are not stored. It states that its migration tool complies with GDPR. The free plan allows unlimited mailboxes but caps each at 150 MB and concurrent migrations at three; it excludes auto-sync, backup, bulk migration, CSV upload, and date filtering. The monthly plan is $14.90 a month, and the yearly plan is $129.90 a year; both include VAT. Calendar and contact migration are not supported.

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.