@misc{rfc9042, series = {Request for Comments}, number = 9042, howpublished = {RFC 9042}, publisher = {RFC Editor}, doi = {10.17487/RFC9042}, url = {https://www.rfc-editor.org/info/rfc9042}, author = {Bron Gondwana}, title = {{Sieve Email Filtering: Delivery by MAILBOXID}}, pagetotal = 8, year = 2021, month = jun, abstract = {The OBJECTID capability of IMAP (RFC 8474) allows clients to identify mailboxes by a unique identifier that survives renaming. This document extends the Sieve email filtering language (RFC 5228) to allow using that same unique identifier as a target for fileinto rules and for testing the existence of mailboxes.}, }