In this article, we introduce a new extension of classical convexity which is called generalized exponentially
s
,
m
;
η
-preinvex functions. Also, it is seen that the new definition of generalized exponentially
s
,
m
;
η
-preinvex functions describes different new classes as special cases. To prove our main results, we derive a new
q
m
κ
2
-integral identity for the twice
q
m
κ
2
-differentiable function. By using this identity, we show essential new results for Hermite–Hadamard-type inequalities for the
q
m
κ
2
-integral by utilizing differentiable exponentially
s
,
m
;
η
-preinvex functions. The results presented in this article are unification and generalization of the comparable results in the literature.