You can convert emails from one email client to another without losing attachments by using a reliable email migration tool. First, export your mailbox data into a supported format, such as EML, MBOX, PST, or OST, and then import it into the destination email client. For example, you can convert Thunderbird EML files to Outlook PST, Outlook PST files to EML files, and other types of conversion.
For a smooth migration, use a MailsDaddy Software that supports bulk email conversion, preserves attachments, maintains folder hierarchy, and keeps email formatting intact. Always preview the converted emails before completing the migration to ensure that all attachments and other mailbox data are transferred successfully.