Is there any way to delete hundreds of empty contacts group
119712
Script to delete all groups in contacts
152384
How to delete lots of mongodb collections at once?
73497
Getting rid of numbers
147873
How to remove (not block!) a contact from Google Hangouts?
107028
Methods of speeding up a huge DELETE FROM  with no clauses
15014
Can you set custom ringtones for contact groups?
141108
How to leave empty last name or both in Google Mail?
141764
Advanced search in Google Contacts
120209
Delete All Subscriber and Upload Lists again
116006
How to delete empty fields from a Shapefile with QGIS or ogr2ogr?
100543
How do I sync Google contacts?
9434
How do I check if a list is empty?
129670
How to clean up unnecessary files
50003
How to restore iPhone contacts lost after an app crash?
85012
How do I delete attachments, in bulk, from messages in Gmail?
33809
How to get all android contacts but without those which are on SIM
119895
One contact with several numbers - sent messages