Lotus Notes Attachment

Lotus Notes provides an option to the user to multi-select the files.
In addition to it, it even gives an option to the user to zip the files while attaching, offering a good User experience(UX).

Gmail Attachment

To attach a file on Gmail, you need to click on the “Attach a file” link, on clicking that a text box comes along with a “Browse” button. If you want to add one more file, again you need to click “Attach another file” and then you need to click again on “Browse” button to browse through the files in your machine.

To attach a file you need to do 2 clicks. So that means for 5 attachments, you need to do 10 clicks and browsing through the file 5 times. It’s obvious that the user wants to browse when he clicks on “Attach a file” link. So a “File upload” window to browse should pop up on clicking “Attach a file” link, reducing one click per attachment.It should also provide an option of multi selecting the files in a folder. These files can be shown to the user the way multiple email addresses are shown. For that the UI can be changed a little bit as shown below.
To remove a file, just delete the way you delete the email addresses. And for attaching more than one file from different folders, just clicking on browse button and select the file.