When the first car was run from Clonmel to Cahir, Bianconi offered to carry the mail for half the price then paid for "sending it alternately by a mule and a bad horse." The post was afterwards found to come regularly instead of irregularly to Cahir; and the practice of sending the mails by Bianconi's cars increased from year to year.

Dispatch won its way to popularity in Ireland as elsewhere, and Bianconi lived to see all the cross-posts in Ireland arranged on his system.
The postage authorities frequently used the cars of Bianconi as a means of competing with the few existing mail-coaches.

For instance, they asked him to compete for carrying the post between Limerick and Tralee, then carried by a mail-coach.

Before tendering, Bianconi called on the contractor, to induce him to give in to the requirements of the Post Office, because he knew that the postal authorities only desired to make use of him to fight the coach proprietors.

But having been informed that it was the intention of the Post Office to discontinue the mail-coach whether Bianconi took the contract or not, he at length sent in his tender, and obtained the contract.
He succeeded in performing the service, and delivered the mail much earlier than it had been done before.