When sending color faxes you may notice faxes fail or the images or text in the fax is very granulated or pixelated. This article gives more information about color faxes with FaxMaker.
The FaxMaker document conversion process creates a tiff file which is transmitted via fax. FaxMaker supports images in monochrome to be converted to the to the tiff file. Other image formats can cause issues with the tiff file size or may not convert to tiff at all.
When selecting documents for faxing converting them to monochrome, rather than greyscale if possible, will prevent issues with conversion and transmission.