Loop Existing Outlook VBA Macro

General information for the business: We handle high-volume email boxes
Kind of development: Customization of existing program

Description of every module: Existing modules: VBA macro built for Outlook 2010. At run-time, the macro asks the User to select an email folder and then to select a Windows file folder. The macro runs through the email folder + its sub-folders one at a time and "transfers" every folders' email attachments to the selected file folder, leaving a link to said file folder in the emails. Macro runs great 95% of the time.

Description of requirements/functionality: Current macro requires email to be pre-loaded (as Full Items) from their Microsoft Exchange server or the process won't run as intended. Currently User has to manually select the intended folder(s) to let their emails load then log on hours later to run the macro on the intended folders.

Your job is to add a loop feature so that the macro runs as follows:

Step 1. With existing Code, User runs macro and selects the email folder and file folder as inputs
Step 2. With new Code, For Each email folder from the selected folder and its subfolders
a. Sync to MS Exchange
b. Once folder is fully synchronized, run the macro on the folder
c. Once emails are handled loop to the Next folder
Bonus. Improve run-time by halting background Syncs to MS Exchange
a. Macro runs on a dedicated PC, e.g. Inbox/other folders don't need to be Synced locally

Turnaround time: Important but non-urgent. I'd expect this to take a matter of hours within the next 2 weeks.

Additional Notes: I'm much more familiar with VBA for Excel, and I couldn't figure out how to run the Sync and detect that it was complete. My understanding is that it's possible to add an email folder to a custom Send/Receive group, run the Send/Receive, and then remove the email folder from the Send/Receive group before repeating for the Next folder. Open to alternative solutions.

Many thanks!