Let Users Select Specific Email Attachments to Add to Salesforce
Reduce your company’s data
usage in the cloud by letting users add only the attachments that matter to them to Salesforce records.
In Outlook configurations,
Add Email lets side panel users add emails to Salesforce records, and automatically
includes email attachments. Now you can let users add only specific attachments when you
enable Side Panel, Add Email, and Allow
users to select attachments.
When you enable Allow users
to select attachments for your users, attachments aren’t included automatically
when users add an email to a Salesforce record. Instead, users can
select specific attachments they want to include when they click 
in
the side panel next to each attachment. 