"hereby notify" is correct and commonly used in written English.
It is typically used in a formal or legal context to indicate that the speaker or writer is formally informing someone of something. Example: I hereby notify you that your membership in the club has been revoked due to repeated violations of the code of conduct.
"You are hereby notified that your right to vote has been challenged by a qualified elector," it said.
"The general public is hereby notified that emergency services probably will not be available under current winter conditions," he wrote.
A terse statement in the government gazette said: "It is hereby notified that the Zimbabwe electoral commission with the approval of the minister of justice made the following notice: a poll shall be taken on Friday, June 27 , 2008 for the purpose of electing a person to the office of president".
The attached letter, the employee said, consisted of a single sentence citing the Justice Department regulation for obtaining journalists' telephone records, and saying that The A.P. "is hereby notified that the United States Department of Justice has received toll records from April and May 2012 in response to subpoenas issued" for 20 phone numbers in five area codes and three states.
Simply Hired hereby notifies your company that it is terminating the Agreement effective in 30 days, on June 26th , 2016
"We are hereby notifying the Federal Government of Nigeria... that Pengassan shall be forced to go ahead and apply the bitter option of ordering the systematic shutting down of oil and gas production with effect from... 0000 hours of Sunday 15 January," it said in a statement.
"The Benyon brothers are hereby notified that they and the big US development backers are evicted from the New Era estate by the families that live there".
"You are hereby notified that you completed your terms of supervision on 1/24/2011... and are no longer under the supervision of the Department of Corrections," the letter states.
Notify: major case squad".
