Losing the inbound routes functionality completes wrecks my use-case for mailgun. I've been using it as a way to have business emails come through a custom domain and then routed to personal email addresses. It actually works well enough as with personal email you can respond "as" the custom domain. I have a tiny startup with a few users that I use the routing to move incoming email to also their own personal addresses. Sure it's simple, but it's far cheaper than getting GSuite. If anyone has any advice for my situation, I could love to hear it.