You have huge of contact..!!!
Dont worry we are provide a fully managing contact and merge contact of duplication.
Merge By :-
>Name
>Phone
>Email Address
Feature :-
>Simply manage contact and easy backup.
>Easy Mail Backup file
>Easy upload to drive backup file
>No sign in/signup
>Set Notification for reminding backup
>set days for Remind like 3 Days,5 Days,7 Days,12 Days,15 Days,20 Days,30 Days.
>By Default remind on every 3 days.
>Contact Edit