Managing Yandex.Mail attachments
All Yandex.Mail attachments over 25 MB are automatically sent using the Yandex.Disk service. The files are uploaded to Disk then a download link is sent to the recipient.
Files are only available to the message sender and recipient.
You cannot use Yandex.Disk to delete files less than 25 MB in size. You will need to delete the message itself.
If you couldn't find an answer to your question, please let us know. If possible, attach a screenshot.