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.