Gmail -

: Create group mailing lists by labeling contacts in Google Contacts; when composing, just type the label name in the "To" field to add the whole group. Organization & Maintenance

: You can add +anytext to your username (e.g., yourname+newsletters@gmail.com ) to track who is selling your data or to filter specific incoming mail automatically. : Create group mailing lists by labeling contacts

: To quickly clear a cluttered inbox, use the "Select all" checkbox at the top left to mark thousands of emails as read at once. : Create group mailing lists by labeling contacts