Read OLM files Without Outlook in C#

olm-check-messages.cs

using (var olm = OlmStorage.FromFile(fileName))
{
    var folder = olm.GetFolder("Inbox", true);

    if (folder.HasMessages)
    {
        Console.WriteLine($"Message count: {folder.MessageCount}");
    }
}

olm-extract-email.cs

using (var olm = OlmStorage.FromFile(fileName))
{
    var folder = olm.GetFolder("Inbox", true);

    foreach (var messageInfo in folder.EnumerateMessages())
    {
        if (messageInfo.Date == DateTime.Today)
        {
            // Extracts today's messages form Inbox
            var msg = olm.ExtractMapiMessage(messageInfo);
        }
    }
}

olm-folder-hierarchy.cs

using (var olm = new OlmStorage(fileName))
{
    PrintAllFolders(olm.FolderHierarchy, string.Empty);
}

private void PrintAllFolders(List<OlmFolder> folderHierarchy, string indent)
{
    foreach (var folder in folderHierarchy)
    {
        Console.WriteLine($"{indent}{folder.Name}");
        PrintAllFolders(folder.SubFolders, indent+"-");
    }
}

olm-get-folder-by-name.cs

using (var olm = OlmStorage.FromFile(fileName))
{
    // get inbox folder by name
    OlmFolder folder = olm.GetFolder("Inbox", true);
}

olm-get-folders.cs

using (var olm = OlmStorage.FromFile(fileName))
{
    var folders = olm.GetFolders();
}

olm-list-mapi-messages.cs

using (var olm = OlmStorage.FromFile(fileName))
{
    var folder = olm.GetFolder("Inbox", true);

    foreach (var msg in folder.EnumerateMapiMessages())
    {
        // save message in MSG format
        msg.Save($"{msg.Subject}.msg");
    }
}

olm-list-message-infos.cs

using (var olm = OlmStorage.FromFile(fileName))
{
    var folder = olm.GetFolder("Inbox", true);
    foreach (var messageInfo in folder.EnumerateMessages())
    {
        Console.WriteLine(messageInfo.Subject);
    }
}

olm-open-by-constructor.cs

var fileName = "MyStorage.olm";
var olm = new OlmStorage(fileName);

olm-open-by-fromfile-method.cs

var fileName = "MyStorage.olm";
var olm = OlmStorage.FromFile(fileName);