If you want to import Amazon Workmail to PST then you will go with this informative article Ultimate Guide to Export Amazon Workmail to PST. Here you will get the most effective and secure manual solution to accomplish the process. However, the manual method is soo time-consuming. So, additionally, they will also provide an advanced solution AWS WorkMail Migration Tool. The software is a feature-rich tool that allows its user to backup and migrate their Amazon Workmail emails to PST, EML, MBOX, MSG, etc.  It provides you with an option to save emails and attachments separately. You can download the free demo version of the software to analyze the performance.