One-time lifetime buyout for Inbox (esp. AppSumo lifetime users)

I'd love to see a one-time lifetime buyout for the Inbox add-on — pay once, keep it permanently — instead of only the recurring monthly option. To be clear, I'm asking for a perpetual license, not a monthly discount.

For context: I'm an AppSumo Tier 4 customer and already have Analytics on lifetime. Inbox is currently the only add-on without a lifetime/buyout path.

I'd suggest looking at this as net-new revenue rather than lost revenue. A big part of the AppSumo base came in specifically for the lifetime model, and for that group a recurring add-on is a non-starter on principle — so today Inbox earns nothing from us. A one-time buyout doesn't undercut your monthly subscribers (it's a different buyer entirely); it turns people who currently pay zero into paying customers.

You could even set it at a premium one-time price and it's still revenue you aren't capturing today. As a bonus, it keeps the AppSumo cohort engaged, which tends to show up in reviews and retention.

So — any chance of a one-time lifetime buyout / perpetual license for Inbox, at least for existing AppSumo lifetime customers?

If you're another AppSumo user who'd want this too, please upvote and add a comment so the team can see the real demand.