public Task<EnvelopeCollection> DownloadEnvelopesAsync(
	string messageIndexSet,
	bool indexIsUid,
	EnvelopeParts parts,
	int bodyPreviewSize,
	string[] extraHeaders,
	string[] extraItems
)

Public Function DownloadEnvelopesAsync ( 
	messageIndexSet As String,
	indexIsUid As Boolean,
	parts As EnvelopeParts,
	bodyPreviewSize As Integer,
	extraHeaders As String(),
	extraItems As String()
) As Task(Of EnvelopeCollection)

Parameters

messageIndexSet

Type: SystemString
A message sequence string containing ordinal message numbers or UIDs. Can be composed manually or using ToString.

indexIsUid

Type: SystemBoolean
If true, messageIndexSet is treated as a sequence of UIDs; otherwise, as a sequence of ordinal message numbers.

parts

Type: MailBee.ImapMailEnvelopeParts
Specifies which message elements or attributes to download.

bodyPreviewSize

Type: SystemInt32
If parts includes MessagePreview flag, specifies the length of the message body section (in bytes) to be downloaded in addition to the message header section; if 0, only the message header is downloaded; if -1 or -2, the entire message is downloaded. -1 is the only option which also sets Seen flag marking the message as read.

extraHeaders

Type: SystemString
The array of names of message headers to be downloaded, or a null reference (Nothing in Visual Basic) if additional headers are not needed.

extraItems

Type: SystemString
The array of additional FETCH request items to download, or a null reference (Nothing in Visual Basic) if additional FETCH items are not needed.

Return Value

Reference