The company, which now has over 20,000 monthly subscribers in the UK, saw a massive growth during the pandemic, with a reported 1000% increase in monthly recurring revenue over the past two years.
Since March 2020, VetBox has shipped over quarter-of-a-million boxes.
Bought by Many says the acquisition is a major part of its expansion beyond insurance and into preventative wellness.
Will said: "I founded VetBox after seeing that far too many UK pets were missing out on essential parasite protection.
"I'm really proud of the progress that VetBox has made in solving this issue in just five years and can't wait to see what we can achieve as part of the Bought By Many family.
"As a vet I've seen first-hand the fantastic service Bought By Many offer pet owners, so it's been a pleasure seeing this partnership grow over the past few years."
PS: Whilst you're here, take a moment to see our latest job opportunities for vets.