[Grammar] By or via

[uktous]

Hi,

Question:
Should I use “by or via”?

Sentence:
I will not be in the US next month. If you finished your work, you could send it to me by / via email.

Thanks

 

[Allen165]

I think both are right, but I would use "by."

Not a teacher.

 

[billmcd]

Either is OK but you should use "if you finish..."

 

[bhaisahab]

Or "If you have finished..."

 

[Trance Freak]

Or "If you have finished..."

But wouldn't that be against the 4th conditional rule?