The phrase "alert letter" is correct and usable in written English.
It can be used to refer to a letter that serves to notify or inform someone about a specific issue or situation that requires attention.
Example: "The company sent out an alert letter to all employees regarding the upcoming changes in policy."
Alternatives: "notification letter" or "warning letter".
Just yesterday, a remarkable "alert letter" from the Office of the Special Inspector General for Afghanistan Reconstruction (SIGAR) went public.
Problems with the culvert protection program were first raised publicly last year by the inspector general's office, which sent an "alert letter" to the military.
RESULTS: Of 416 women approached to participate, the first 351 women were recruited by way of direct contact by research staff and the remaining 65 women were recruited by research staff after their physician had sent them an alert letter.
Predictably, the California Chamber of Commerce opposes DISCLOSE, and sent an Alert Letter to every Assembly member, claiming the bill "would inhibit protected free speech in the political process by making significant and onerous changes to required disclosures on campaign advertisements and slate mailers".
The FTOP program aimed to improve this by sending out alert letters to the patients' family physicians, incorporating a reminder and educational information about post- hip fracture osteoporosis management.
Only one clinical nurse specialist was involved in the study and provided the patient assessments, education and follow-up, and sent out fracture alert letters to physicians for both the 2008 and 2011 patient cohorts.
On the basis of these reports, alert letters on the subject of tc PO2 measurements were published by Canadian and British health authorities [ 13, 14], and after clinical introduction of pulse oximetry, the interest in tc oxygen monitoring decreased was abandoned altogether in many neonatal intensive care units (NICUs) around the world [ 15].
Email action alerts, letters from the coalition and press releases are among the tactics that have been employed in this effort.
To his credit, he has been right on the money the past couple of years in alerting the letter's subscribers to an eventual bevy of economic, financial and market risks.
In a flashing code-red alert, the following letter has been sent to every member of the US House and Senate by the authors of the bestselling new book, The Dangerous Case of Donald Trump, and their colleagues.
We'll put "spoiler alert" in big letters.
