Share send by mail issue when using Postbox

What I did: Share>Send by Mail>PDF

What happened: Postbox open but no attached PDF

What I expected: attached PDF

Things that might be helpful to know (Agenda version, OS and model, etc): Mac OS 10.14.6

Given we use the general sharing APIs and it works with other email apps, it’s most likely due to how Postbox accepts the sharing event, best to approach their support. Let us know if they need anything specific from our end.