I couldn't understand the meaning of this sentence. How can I say it in different way?

I imagine you will have a lot to say to him

I do imagine you will have volumes to say to him,

i do imagine you will have alot to say him

i do imagine you will have so much to tell him.

It means that you'l have a lot to say. A volume is a book.

I imagine you'll have lots to say to him.

I think you'll have loads to say to him.

It means you have a lot to say.

"I imagine you'll have plenty to say to him."

In other words, you'll have a lot to say to him.

Volumes as in books