What is the attachment size limit for emails?

The maximum attachment size for a single email sent through mybox email services is:

2 GB

This limit applies to the total size of all attachments included in a single message.

Sending Large Files

If the file you want to send is close to the maximum size limit, keep in mind that attachments are typically encoded during transmission, which may slightly increase their size.

If you encounter issues sending large files, consider the following options.

Compress Files into a ZIP Archive

Most operating systems include built-in tools for creating ZIP files.

Windows

1. Right-click the file or folder.
2. Select:

Send to → Compressed (zipped) folder

macOS

1. Right-click the file or folder.
2. Select:

Compress

This can significantly reduce the size of documents, spreadsheets, and other compressible files.

Split Large Files into Multiple Parts

If the file exceeds the attachment limit, you can split it into smaller archives using file compression software such as:

WinZip

or

7-Zip

These applications allow you to create multi-part archives that can be sent in separate emails.

Alternative: Share Files Using Cloud Storage

For very large files, it may be more convenient to upload the file to a cloud storage service and send a download link instead of an attachment.

This approach:

• Avoids attachment size restrictions
• Speeds up email delivery
• Reduces mailbox storage usage

Summary

The maximum size of email attachments sent through mybox is:

2 GB

If your files are larger than this limit, consider:

• Compressing them into ZIP archives
• Splitting them into smaller parts using tools such as WinZip or 7-Zip
• Uploading them to a cloud storage service and sharing a download link instead

These methods can help ensure successful delivery of large files.