Looking on the internet deeply has found these results:

i will get back to you is the most popular phrase on the web.

i shall get back to you 12,600 results on the web	i will get back to you 128,500,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Apr 11, 2015 ... parcel to you and i shall get back to you,but endeavour to forward your informations ones you read this mail. Thanks and may God bless you, ... might end the call with: �Thank you Mr. Smith, I appreciate your patience and I shall get back to you as soon as I can. And thank you for calling the Bristol Hotel. Remember i told you in one of my mails that i shall get back to you as soon as i receive offers for any of the boats remaining which could be anytime,it could be�... I shall get back to you on this soon. I have already tried incorporating dropout to the first layer. However, I got an error. I think I am not building�...	I will get back to you on the detail when I have had a chance to study the matter. I will get back to you very soon. I will get back to you on all of this later. Well, I got to be somewhere, but I will get back to you. You know what, let me check on the head count and I will get back to you with a number. Let me check the details and I will get back to you with the results of my enquiries. I will get back to you with the name you wanted shortly. I will get back to you on all of this later.

i shall get back to you

12,600 results on the web

i will get back to you

128,500,000 results on the web

More popular!

Apr 11, 2015 ... parcel to you and i shall get back to you,but endeavour to forward your informations ones you read this mail. Thanks and may God bless you,
... might end the call with: �Thank you Mr. Smith, I appreciate your patience and I shall get back to you as soon as I can. And thank you for calling the Bristol Hotel.
Remember i told you in one of my mails that i shall get back to you as soon as i receive offers for any of the boats remaining which could be anytime,it could be�...
I shall get back to you on this soon. I have already tried incorporating dropout to the first layer. However, I got an error. I think I am not building�...

I will get back to you on the detail when I have had a chance to study the matter.
I will get back to you very soon.
I will get back to you on all of this later.
Well, I got to be somewhere, but I will get back to you.
You know what, let me check on the head count and I will get back to you with a number.
Let me check the details and I will get back to you with the results of my enquiries.
I will get back to you with the name you wanted shortly.
I will get back to you on all of this later.