Recovering data from a large or oversized OST file can be challenging, especially when the file approaches or exceeds Outlook’s default size limit and starts causing sync failures or corruption. Before attempting recovery, make a backup copy of the original OST file and avoid making changes to it. For a severely damaged or inaccessible large OST, specialized recovery software can scan the file and extract recoverable mailbox data. The SysInfo OST Recovery Tool supports recovery from oversized and corrupted OST files and provides three recovery modes—Standard, Advanced, and Deep—to handle different levels of corruption. It can recover emails, attachments, contacts, calendars, tasks, journals, and other Outlook items. Users can preview recovered mailbox data before saving it and apply a date-range filter when only specific emails are required. The recovered data can be saved in formats including PST, EML, MSG, DBX, and MBOX. This approach helps preserve recoverable data while creating a separate usable copy of the mailbox.

Yes. A reliable way to migrate multiple IMAP accounts at once is to use a batch migration tool that supports CSV-based account import. SysInfo IMAP Backup Tool provides a Batch Mode where you can add multiple accounts through a CSV file containing details such as email address, password, IMAP host, and port, then process the accounts together. The tool can preserve the mailbox folder structure, attachments, metadata, and timestamps while supporting migration to PST, MBOX, EML, MSG, PDF, Gmail, Microsoft 365, or another IMAP account. It also provides filters, duplicate removal, incremental migration, folder mapping, and migration reports, which can be useful for large-scale mailbox transfers. For enterprise migrations, using CSV batch processing can significantly reduce the repetitive work involved in configuring each account individually.

To migrate IMAP emails to Office 365 without losing attachments, use a reliable migration tool that transfers complete mailbox data while preserving attachments and the original folder structure. First, connect your IMAP account and Microsoft 365 account, then select the required folders and configure the migration options. SysInfo IMAP Backup Tool can help simplify this process by supporting batch migration, folder mapping, advanced filters, and duplicate removal. It is designed to preserve important email data, including attachments, metadata, timestamps, read/unread status, and folder hierarchy during migration. The tool also supports incremental synchronization, which can help transfer newly added emails without repeatedly migrating existing data. Users can process multiple IMAP accounts through CSV-based batch migration, making it useful for organizations handling several mailboxes. Its local processing approach helps keep mailbox information private during the migration. With folder mapping and progress tracking, users can organize the migration more efficiently and move IMAP emails to Office 365 while retaining essential mailbox data and attachments.

The safest way to repair a corrupt PST file is to avoid modifying the original file and use a reliable recovery tool that can preview the recoverable data before saving it. Aryson Outlook PST Repair Tool is designed to repair corrupt or inaccessible PST files and recover mailbox items such as emails, contacts, calendars, tasks, and notes. Add a copy of the damaged PST file to the software and choose Standard, Advanced, or Deep recovery mode according to the severity of corruption. After scanning, preview the recovered data and verify the required items before saving them. You can save the recovered mailbox data as a new PST file or export it to formats such as EML, MSG, DBX, or MBOX. Aryson also supports encrypted and password-protected PST files, ANSI and Unicode PST formats, and oversized PST files. Working with a copy and saving recovered data separately helps protect the original PST during the recovery process.

You can recover a corrupted Access database on Windows 11 by first creating a backup of the original MDB or ACCDB file and then using a dedicated recovery utility. SysInfo MS Access Recovery Tool supports Windows 11 and can repair corrupted MDB and ACCDB files without requiring advanced technical knowledge. Add the damaged Access database to the software and select the appropriate Access version or use the auto-detect option. Start with Standard Recovery Mode for minor corruption; if the database is severely damaged, use Advanced Recovery Mode. After scanning, you can preview recovered tables, queries, indexes, deleted records, OLE objects, and MEMO data. Finally, save the recovered information as a new database file at your preferred location rather than overwriting the original. This approach helps protect the source file while giving you a safer way to recover important Access database data on Windows 11.