Can an invoice be submitted vie email? September 14, 2019 21:36 Updated Yes. Invoices can be sent directly to our payment processor by following the guidance sent to the veterinary practice after a campaign closes. We can only accept invoices submitted by the practice/hospital and not by pet guardians. Related articles Funds held in escrow Does the veterinary practice need to provide banking information to Waggle? How do I get funds to my veterinarian as quickly as possible? My vet does not accept 3rd party payments. What do I do? Can you send a check rather than e-payment?