I have just received four email rejections in a single day.

One agent said, "fine writing, imaginative, intelligent but don't see a market."

Another said, "Interesting idea but it is not really my area." This from an agent who lists historical novels as an interest?

While the third said, "Did your kid write this?" That was an ouch!

The fourth was very positive that the book was very well written but doubted any major houses would be interested. Too traditional, not enough hooks or gimmicks.

Ah well, "just keep writing, just keep writing".