Create invitations across multiple channels, sometimes your target customers are not as likely to use email like they use Facebook, if you have this information diversify! To test this create bulk invitations across multiple channels, analyze which one works best and give your customers the option to uncheck the ones they don’t want to use, try to also make it easy for your customers to invite all their contacts with just one click and offer them some sort of benefit for sharing. For this procedure, you can use YesGraph, make sure to look at this platform’s tips and their Slideshare!