Mailgun Invoice on first day of March
I was shocked by this invoice. Since I am still in free trial, just send 51 emails via Mailgun. How dare they charged you silently. Please remember download your Mailgun account to the Flux plan(pay as you go), which matching the below quote:
Did you know Mailgun doesn’t have free accounts anymore??
Mailgun recently updated their pricing, including the removal of a free tier. However, under their new pricing, invoices are not sent if they total less than $0.50 - which is still more than 600 emails. For most people who are getting started Mailgun remains free, and subsequent rates are extremely generous. It would cost far, far more (money as well as time) to run your own bulk mail delivery infrastructure, or use most other providers.
Click the setting icon to unsubscribe by the last day you started the trial
or you would received a invoice like me(Mailgun charges you on the first day of each month). I regret that I didn't do that earlier until I received the invoice. I opened a ticket to Mailgun support, hope they will refund me soon. The Flex plan is not on their pricing page, which is not good to customer. I do think the Flex plan suites to me, it include 1000 emails per month, which is sufficient for my usage.