Did Paul ever hear back from the Corinthians?

The penny post was not invented until the 19th century. The Corinthians wanted to write but couldn't find a stamp.

Considering that letters were exchanged throughout the Church to various regions of the known world St. Paul written more letters than what was including within Scripture and yes he also received letters back. That's why when you read the Epistles from Scripture they will seem unanswered because these letters that were written back to him were not included. In fact the Epistles in Scripture are not only the letters that were written by St. Paul to various people and places but also his own personal documents that contained his teachings.

Yes.

After hearing alarming news from Corinth (probably

from Chloe's people) Paul sent Titus-Timothy and

Erastus to Macedonia with instructions to proceed

to Corinth. Timothy probably carried the tearful letter.

"So he sent two of his helpers, Timothy and

Erastus, to Macedonia, while he himself stayed for

sometime longer in Asia." (Acts 19:22)

"I urged Titus to go, and I sent the brother with him"

(2 Cor. 12:18)

Stephanas, Fortunatus and Achaicus arrive in

Ephesus with reassuring news from Corinth.

"I rejoice at the coming of Stephanas and

Fortunatus and Achaicus, because they have

made up for your absence; for they refreshed my

spirit.." (1 Cor. 1617)

Possibly, they simply were not included in scriture.

Anyway, he wrote them and then visited them a few weeks later so anything they had to reply they could have done face to face.

Nah, the pony express rider stopped to have a pony and used the letters!

They love paul very much and he did them so who know

We may never know since spam filters were quite primitive back then.

no there gonna text him back tomorrow