I am seeking a quick and reliable method to convert my Outlook OST files to EML format. Recently, I needed to access some old emails stored in an OST file, but Outlook has not been opening them since the account is no longer active. I have read that converting OST to EML can be helpful, as EML files are supported by multiple email clients, including Thunderbird and Windows Mail. Can someone please suggest the best and fastest method to convert OST to EML without losing any email content or attachments? Should I go for a manual process, or is there a tool that can handle this conversion efficiently?