[krushnac]

Hi am working for a forum . I need these notification on new topic page while creating new topic. can any one guide me how to do ??

Each member should have the following options for each topic posted:
a. Stop All Notifications for this Topic
b. Provide one Daily Notification with all Comments for this Topic
c. Provide one Weekly Notification with all Comments for this Topic

[Robkk]

a. Stop All Notifications for this Topic

The user can just unsubscribe from the topic either from their profile or visiting the topic again.

b. Provide one Daily Notification with all Comments for this Topic
c. Provide one Weekly Notification with all Comments for this Topic

For a daily digest I guess you could use this plugin, but it might not be exactly what you are looking for, and users have reported the plugin not functioning properly. You may need to hire a developer for users to get a daily digest of a specific topic.

https://wordpress.org/plugins/bbpress-digest/