RFC 3502:Internet Message Access Protocol (IMAP) -...
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MULTIAPPEND


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... The MULTIAPPEND extension permits uploading of multiple messages with a single command. When used in conjunction with the [LITERAL+ ...
... round trip. A MULTIAPPEND APPEND operation is atomic; either all messages are successfully appended, or no messages are appended. ...
... LITERAL+ and pipelining but not MULTIAPPEND, it may be possible to get some of the performance advantages of MULTIAPPEND ...
... MULTIAPPEND, it may be possible to get some of the performance advantages of MULTIAPPEND by doing a pipelined "batch" append. However, it will not work as well as MULTIAPPEND for the following ...
... advantages of MULTIAPPEND by doing a pipelined "batch" append. However, it will not work as well as MULTIAPPEND for the following reasons: ...


... MULTIAPPEND Interaction with UIDPLUS Extension ...
... Servers which support both MULTIAPPEND and [UIDPLUS] will have the "resp-code-apnd ...


... The MULTIAPPEND extension does not raise any security considerations that are not present in the base [IMAP ...



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