How is かって being used here?

Question

いつまでに送ればいいかっていうことですよ。

I can kind of get whats going on here. Forgive me if I'm mistaken but I think it means "When are you expected to send this thing, is what I mean".

I don't understand how かって fits here; the dictionary came up with a lot of words similar to かって, but none of them would make sense if I applied them here.

I also went to Google Translate and it decided to group かっていう together and translate it as "I mean" but isn't that implied with いう in the sentence?

Answer 1

かって in this sentence is not one unit, but two. か and って.

It might be easier to see like this:

いつまでに送ればいいか、っていうことですよ。

• か is the question particle.
• って is an alternate form of と, a quotative particle.

Answer 2

To build on rintaun's answer, think of it as being delimited in quotes (er, kakko, whatever):

「いつまでに送ればいいか」ということですよ。

Unpunctuated, pure Hiragana without spaces is actually really hard to read because of ambiguities of this form and the army of homophones. (Trying to read Romaji is even more confusing.)