Hi,
I understand custom fields can be a little tricky to setup. We have an addon planned for it that will add a graphical interface for creating them.
For the rest:
- E-mail piping has nothing to do with e-mail delivery. E-mail piping is inbound e-mails, while e-mail delivery is outbound e-mails. Those are completely different and unrelated.
- E-mail delivery issues have nothing to do with our plugin. It has to do with hosting servers that are bad at e-mail delivery (and it's ok because it's not their job). If you're just sending a couple a not so important e-mails sometimes it's fine, but if you need to deliver a lot of important messages (like support notifications) then you need something more reliable than the hosting server mail server. Absolutely not related to the plugin.
- I didn't know Mandrill stopped their free plan. Thanks for reporting it. As explained in the docs, you can use MailGun instead. Maybe we should write a tutorial on how to use their service. They still have 10k free e-mails per month.
In conclusion, none of the problems (except the custom fields GUI) is related to Awesome Support directly.