How to Import OST files to Yahoo Mail?
You can effortlessly transfer OST files to Yahoo Mail by using the SysInfo OST to PST Converter Tool. It allows you to migrate all your emails, contacts, calendars, and tasks from an OST file straight into your Yahoo Mail account. It preserves the original folder hierarchy and ensures no data is lost during the process. Additionally, you don’t need to have Outlook installed to access your OST files in Yahoo Mail with this solution.
Read more: https://www.sysinfotools.com/ost-to-pst-converter.php
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Kiaan Galindo commented
If you need to import OST files into Yahoo Mail, I recommend using the OST to Yahoo Importer program. It allows you to move OST files without using Outlook, while keeping the folder structure, attachments, and metadata intact. The UI is user-friendly and allows for bulk conversion. If you have two-factor authentication set on your Yahoo account, be sure to use an app password. It is a simple and dependable way to avoid manual processes with Free Demo version.
Read More: https://www.fixvare.com/products/ost/yahoo/Key Features
imports OST files directly into Yahoo without using Outlook
keeps attachments and folder hierarchy intact.
allows for the wholesale conversion of many OST files.
An easy-to-use interface
keeps track of all email metadata, including the date, To, Cc, and Bcc.