async fn fetch_batch(
session: &mut Imap,
account: &Account,
folder: &Folder,
validity: u32,
uids: &[u32],
all: Option<&AllMail<'_>>,
) -> Result<(Vec<Record>, Vec<u32>), SyncError>Expand description
One batch: its records, and the UIDs of All Mail’s messages left out (AllMail).