Info Catalog
gnus: Mail-To-News Gateways
gnus: Other Sources
6.6.5 The Empty Backend
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‘nnnil’ is a backend that can be used as a placeholder if you have to
specify a backend somewhere, but don’t really want to. The classical
example is if you don’t want to have a primary select methods, but want
to only use secondary ones:
(setq gnus-select-method '(nnnil ""))
(setq gnus-secondary-select-methods
'((nnimap "foo")
(nnml "")))