Monitoring online marketing ROI

Some guidelines on tracking ROI from online marketing campaigns:

• Ask each customer how they found out about you.
• Invest in web analytics to track all orders back to where they began their web session from. 
• If you use an email marketing provider, use one that can integrate with your website to track orders.
• Monitor other inbound channels (e.g. telephone) and use discount codes / special offers / unique phone numbers to label inquiries and orders. 
• Allocate and invest time in analysing the performance of each campaign.