MapiFileMBS.Filename as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Windows	MBS Win Plugin	8.3	❌ No	✅ Yes	❌ No	❌ No	Desktop, Console & Web

The attachment filename seen by the recipient, which may differ from the filename in the PathName member if temporary files are being used.

If the FileName member is empty, the filename from PathName is used.
(Read and Write property)

MapiFileMBS.Flags as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Windows	MBS Win Plugin	8.3	❌ No	✅ Yes	❌ No	❌ No	Desktop, Console & Web

The flags.

Currently not used with the plugin.
(Read and Write property)

MapiFileMBS.Path as FolderItem

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Windows	MBS Win Plugin	8.3	❌ No	✅ Yes	❌ No	❌ No	Desktop, Console & Web

The path of the attached file.

When this property is set the PathName property is filled with the absolute path. If you query this property, you get the PathName property as a folderitem.
So this property was made for your convenience.
(Read and Write property)

MapiFileMBS.PathName as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Windows	MBS Win Plugin	8.3	❌ No	✅ Yes	❌ No	❌ No	Desktop, Console & Web

The fully qualified path of the attached file.

This path should include the disk drive letter and directory name.
(Read and Write property)

MapiFileMBS.Position as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Windows	MBS Win Plugin	8.3	❌ No	✅ Yes	❌ No	❌ No	Desktop, Console & Web

An integer used to indicate where in the message text to render the attachment.

Attachments replace the character found at a certain position in the message text. That is, attachments replace the character in the MapiMessage NoteText property at offset nPosition (nPosition is zero based!). A value of -1 means the attachment position is not indicated; the client application will have to provide a way for the user to access the attachment.
(Read and Write property)