(UPDATE on Aug-21-2020) Thank you for considering donating to invaluement. Since we are a for-profit business, donations are NOT tax deductable in the same way as donating to a charity. HOWEVER - for tax purposes, you should probably be able to charge it as a general business expense. For any donation over $100, we can provide an invoice marked 'paid' upon request, or just use your PayPal or CC automated receipt for that. Recently, we started providing SOME amount of our new Service Provider DNSBL to the world - FOR FREE!!! (details here) That effort took hundreds of hours of unbillable-overhead-hours, and that significantly harmed our finances. But due to the emergency of the Sendgrid-ESP phishing spams and other exploits, we felt the strong need to provide this free service to the world, even though it caused many other money-making endeavors to get delayed. Therefore, we could use your donation to help reemburse us for that effort, and to enable us to continue work in this area in the future.
ALSO: If you are not an invaluement customer - and make a donation - then you later decide to become a customer - any donations made will apply to your first invoice if that invoice is generated within a year of the donation (up to the total amount of the invoice).
Invaluement.com PayPal Donation Form: