Ok, here's what's going on: I am developing a property management web app in ASP.NET for my father's small business. He would like the web app to automatically send a receipt/balance/notification via email when he enters a payment from a tenant. He would also like it to send monthly emails on a certain date with each tenant's balance.
Is there a third party API or something similar that would have those capabilities? I have already implemented Twilio to send automatic text messages, I just need to get the emails to send automatically now.
Thank you in advance!