How can I customize the Email template on chatter posts?

Hi All,

I'm trying to stop the email notifications to a community User through APEX code for the following scenarios:

1. Welcome email for a New User creation
2. Email notification on receiving a Private message.

I have used the following code to disable the Email notification:

userId.UserPreferencesDisableAllFeedsEmail = true;

Even then the emails are thrown to the user.
Please suggest some workaround for this.

Hi All,

I'm trying to stop the email notifications to a community User through APEX code for the following scenarios:

1. Welcome email for a New User creation
2. Email notification on receiving a Private message.

I have used the following code to disable the Email notification:

userId.UserPreferencesDisableAllFeedsEmail = true;

Even then the emails are thrown to the user.
Please suggest some workaround for this.