Looking on the internet deeply has found these results:

Confirmation is the most popular phrase on the web.

acknoledgement 136,900 results on the web	Confirmation 1397,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Confirmation received. it does not go with them. Confirmation regarding full disclosure of impaired assets At 3:00, Confirmation, Holy Mass and presentation of the crucifix... I have to send a gift to a cousin for his Confirmation. Confirmation of results exceeding the tolerance with two GC columns with stationary phases of different polarity. I got my eyeball I.D. Confirmation from Brown in the prison. Confirmation our target is using an evil twin router. One more impertinent answer and the Confirmation's cancelled.

acknoledgement

136,900 results on the web

Confirmation

1397,000,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Confirmation received. it does not go with them.
Confirmation regarding full disclosure of impaired assets
At 3:00, Confirmation, Holy Mass and presentation of the crucifix...
I have to send a gift to a cousin for his Confirmation.
Confirmation of results exceeding the tolerance with two GC columns with stationary phases of different polarity.
I got my eyeball I.D. Confirmation from Brown in the prison.
Confirmation our target is using an evil twin router.
One more impertinent answer and the Confirmation's cancelled.