Yes, there are many ways to extract attachments from Outlook online, but the attachments can only be extracted up to a certain limit. To perform this task, I think you should use a professional tool. For this, I would like to recommend you use the Gaintools Outlook Extractor tool. There is no size limit on the tool's ability to work with Outlook OST and PST files. This tool requires just a few simple steps to extract attachments from Outlook. All versions of Windows 10, 11, 8.1, 8, 7, Vista, and XP can use it. Also, it works with all versions of Outlook. To get more information about what the tool can do, visit the free trial version.

Read More: https://www.gaintools.com/outlook-extractor/

Managing an inbox full of Outlook emails and files can be difficult. Old ways of dealing with files, such as downloading and sorting them manually, take a lot of time and often lead to mistakes. To extract attachments from Outlook without installing it, you would be better off using an automated tool. You can extract and save all your Outlook files with just a few clicks. For this, I recommend you use the DataVare Attachment Extractor tool. It can extract multiple Outlook attachments even without installing Outlook. Which helps you organize your work and focus on more important tasks. It makes it easy to get attachments from different emails, saving you time and effort. Or there are other features of this tool.
Features:
Can extract bulk attachments from Outlook.
You can extract attachments from Outlook and save them in multiple file formats, such as XLS, PNG, TXT, etc.
The tool is easy to download on any version of the Windows operating system: 11, 10, 8.1, 8, 7, XP, Vista, etc.
It removes duplicate attachments while extracting attachments from Outlook.
Outlook attachments can also be saved in various formats like XLS, PNG, TXT, etc.
It also has a free demo version, using which you can extract some Outlook attachments.
Read More: https://www.datavare.com/software/outlook-attachment-extractor.html