@Marcus see this earlier topic [SOLVED] Not seeing views or unique views in 3.3.3 - #3 by BaliDave
In that case mailscanner was removing the phplist user tracking pixel.
@Marcus see this earlier topic [SOLVED] Not seeing views or unique views in 3.3.3 - #3 by BaliDave
In that case mailscanner was removing the phplist user tracking pixel.