Assuming you mean
X:1
L:1/4
M:
K:C
%%score T1
V:T1 clef=treble-8
% 1
[V:T1] "∘"e'
then e-string over 12th fret is pretty much the only practical natural harmonic. However, you can always also use an artificial harmonic, e.g. b-string 5th fret and flageolett-pinch the string with the left hand over the 17th fret.
If you instead mean
X:1
L:1/4
M:
K:C
%%score T1
V:T1 clef=treble-8
% 1
[V:T1] "∘"e
then this should actually not be played on the e-string at all. It is best on the A-string over the 7th fret, alternatively on the low E-string over the 5th fret.