Character encoding for email subject is not the same as email body. To use other letters than a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, I have to convert it like this.
Example:
Expected: åäö
Actual: åäö
Unicode Character UTF-8 (chars) UTF-8 (hex)
U+00E5 å Ã¥ c3 a5
U+00E4 ä ä c3 a4
U+00F6 ö ö c3 b6
U+00C5 Å Ã… c3 85
U+00C4 Ä Ã„ c3 84
U+00D6 Ö Ã– c3 96