Can I upload MBOX to IMAP if the file is very large?

sanjaykumar210

Yes, you can upload MBOX to IMAP even if the file is very large, as long as you use a method that supports bulk and controlled uploading. Large MBOX files often cause problems when uploaded through email clients because of timeouts, sync failures, or connection interruptions.

A safer approach is to use a dedicated solution like the MailConverterTools MBOX Converter Tool. It is designed to handle large MBOX files by processing emails in batches rather than all at once. Before uploading, the tool scans the file and lets you preview folders and emails, so you know exactly what will be transferred.

When uploading to an IMAP account, the software maintains folder structure, email properties, and attachments. You can also apply date filters to upload emails in parts, remove duplicate messages, or exclude attachments to reduce the overall size. These options help manage large files without overloading the IMAP server.