Just making a simple note tonight that Gmail gives users a simple way to purge unwanted emails.
Gmail automatically sorts social media related notifications, and promotional emails into separate folders. A user can delete all of the emails in either category simply by clicking on the tab for each at the top of the Gmail inbox and then choosing all in the drop-down menu for the selection box at the upper left.
Hotmail doesn't allow these types of unwanted messages to be removed as easily. Something to keep in mind when freeing up space in your own web-based email account, and when considering email collection from personal accounts.