- This command returns exit status 0 on successful mail delivery,
- non-zero otherwise. The default is to indicate failed mail delivery on
- any errors, including message file delivery to the filesystem, message
- indexing to Notmuch database, changing tags, and synchronizing tags to
- maildir flags. The <b>--keep</b> option may be used to settle for successful
+ This command returns exit status 0 on successful mail delivery,
+ non-zero otherwise. The default is to indicate failed mail delivery on
+ any errors, including message file delivery to the filesystem, message
+ indexing to Notmuch database, changing tags, and synchronizing tags to
+ maildir flags. The <b>--keep</b> option may be used to settle for successful