How to resolve failed email inbox access in release 3.1.0.11?

Thanks so much for your suggestion. I think, the API has changed and the properties combinedInbox and filterUnread are not valid properties of EmailMessageListModel any more. I can't find them in the documentation of git.merproject.org. The impact is, that it's not as easy any more to fetch emails for a timeline (I hate fundamental API changes). I think I have to use a so called folter accessor:

Component {
    name: "EmailAgent"
    prototype: "QObject"
    exports: ["Nemo.Email/EmailAgent 0.1"]
    ...
    Method { name: "combinedInboxAccessor"; type: "FolderAccessor*" }

Then I may have to define this object as a property of EmailMessageListModel.

Component {
    name: "EmailMessageListModel"
    prototype: "QMailMessageListModel"
    exports: ["Nemo.Email/EmailMessageListModel 0.1"]
    ...
    Property { name: "folderAccessor"; type: "FolderAccessor"; isPointer: true }

I'm not sure, whether my code should look like this:

EmailMessageListModel {
     id: combinedInboxModel
     folderAccessor: anyNameOfThePointer
}

I'm not sure, whether this is sufficient. Where and how should I instaniate the EmailAgent and trigger the method. I tried this, but the list is empty:

EmailMessageListModel {
    id: combinedInboxModel
}
EmailAgent {
    id: emailAgent
}
Component.onCompleted: {
    combinedInboxModel.folderAccessor = emailAgent.combinedInboxAccessor()
    combinedInboxModel.selectAllMessages()
}

The log says:

Messaging :  opening database

So I think I'm on the right way. Any idea?

I don't know, maybe. I don't know the ins & outs of your application, I only have jolla-email app to reference.

This feature is currently in a very simple stage. I just reference the model in a list view:

SilicaListView {
     id: listView
     anchors.fill: parent
     model: combinedInboxModel
     header: ...
     delegate: ....

Maybe I have to trigger somehow the loading process.