The invention relates to electronic smoking devices (10) and to additive reservoirs (56) for electronic smoking devices (10). In order to be able to provide an additive that does not pass an atomizer (26) of the electronic smoking device (10), the invention provides that the electronic smoking devices (10) comprise an additive supply assembly (40) with at least one additive inlet opening (44) arranged at a distance to the atomizer (26), and that the additive reservoirs (56) comprises at least one additive outlet opening (66) in its inner lateral surface (60).