The phrase 'through multiple channels' is correct and usable in written English.
You can use it when you want to emphasize that something is being done or received from more than one source or through more than one medium. For example: We are getting feedback on our new product through multiple channels, including online surveys and focus groups.
Terrorist communication takes place through multiple channels, all working simultaneously.
That's partly why consultants urge their Internet clients to go the "clicks and mortar" route, operating through multiple channels.
This necessitates approval through multiple channels, such as e-mail, text and verbal assurance by phone.
Promote the contest through multiple channels (like Facebook, Twitter and YouTube).
U.S. Attempts to Address Humanitarian Concerns - 9. (U) The United States is addressing the humanitarian impact of unexploded cluster munitions through multiple channels.
They can express their views through multiple channels: China has 450m internet users and the number of religious believers exceeds 100m.
Lufthansa's crisis management centre issued regular, reliable updates through multiple channels, while swiftly extending psychological support and financial relief to the relatives of the dead.
"Experian, along with the industry, has implemented effective solutions for consumers to dispute what they identify as errors in their credit reports through multiple channels".
Multiple channels Getting information out through multiple channels is something that the council believes is important, particularly during hazardous weather such as heavy snowfall, for example, when people are trying to find out what is going on in their area.
The challenge, however, is to develop the technology infrastructure to store, retrieve and distribute that content through multiple channels -- whether over the air, on the Internet or by interactive cable systems.
"We are committed to assisting patients and health care providers by providing information through multiple channels and paying for the costs of doctor visits, tests and procedures associated with the recall," he said.
