
If you want to extract all email addresses (Senders and CCs) from Outlook Inbox at once, you are right to use a tool for this. Manually doing this is very time-consuming. The best tool I have used for this purpose is the Softaken Outlook PST Extractor. This tool extracts emails in bulk from Outlook PST files—whether from the inbox, sent items, or any folder.
Extracts email addresses from all From, To, CC, and BCC fields in PST files.
You can target only the inbox or a specific folder if you want.
Automatically removes duplicate emails, making the output clean and useful.
The output can be saved in VCF, MSG, or CSV for easy use later.
A free demo version is available so you can test its functionality by extracting a few email addresses first.
Its team also provides 24x7 support if there is any problem in any step.