More user friendly settings and email preferences.
There is no option to bulk select and delete old/useless contacts. I had to painfully delete one by one which took almost 4-5 hours for deleting and the page refresh. Also couldn't find any option to set the email preferences like save / do not save the sender address to our contact list. The application automatically saves the contact. If you can add these and make the settings / preferences more user friendly by adding more or better menus, it will be great. I have been using this email as my primary email address for more than 20 years and need to edit the contacts and other preferences once in a while. Also I was not able to delete old yahoo group which has been dormant for many years now and could re-order the groups,. You have already made the groups feature obsolete so could have given the option to delete the existing groups.