Sets and hides field Opt-Out for all the partners
Avoids duplicate mailing lists and contacts
Webkul Base Survey facilitates you to take the survey of the people about any particular event using a question or series of questions.
Use the QWeb templating mechanism for emails
Mass mailing lists that get autopopulated
Disable mass mailing to partners by default (opt-out)
Allows sell registrations with more than one attendee