You can't directly open an online archive in Outlook. Online archives are typically stored in cloud-based services like Google Drive, OneDrive, or Dropbox, and Outlook doesn't have built-in functionality to access these directly.
Here are some ways you can access the content of an online archive in Outlook:
- Download and Save: Download the files from the online archive to your computer and then attach them to an email in Outlook.
- Share Link: Share a link to the online archive with the recipient of your email. This allows them to access the files directly.
- Embed Files: If the archive contains images or documents, you can embed them directly into your email.
You can also use Outlook's integration with cloud storage services to access and manage files. This allows you to view, edit, and share files from your cloud storage directly within Outlook.