Which payment models are best to use in a once-off campaign? By vmartinez Which payment models are best to use in a once-off campaign? Affiliate performance model Product gifting/seeding Content retainers (fixed fees) Pay-per-post Related content Related questions:Which of the following is NOT a payment option that…If one of your registered leads purchases HubSpot…You’re working to expand a travel app into new…Rita is working to expand a travel app into new…