Later, Ruth Millward, a patient safety manager, told the inquiry that there was an unhealthy culture in the NHS to copy people into emails so people can say they have passed on information.
Ms Millward, who was head of risk and patient safety at the hospital, was asked about an email she and others received from a consultant in March 2016 which identified a number of unexpected deaths on the neonatal unit and had a table showing which nurses were on duty.
She said: "There’s a very unhealthy culture in the NHS to copy people into emails so you can say that you have told so and so when in fact you haven’t, and from what I can recall of the email this is not a final report.
"The email had no specific instruction. It’s unfair to say I’m obliged to open an email and open an attachment and read it.”
She later said "at no point did any of the consultants say to me ‘I am concerned that Lucy Letby is deliberately harming babies’. That was never voiced to me and I don’t recall being in a room when that was ever voiced."
Ms Millward said one of her reflections given in her statement to the inquiry was that the consultants did not use the hospital’s then governance processes to report their concerns.
When asked by counsel to the inquiry if this was why the concerns were not effectively taken sufficiently seriously, she replied: “Absolutely.
"They didn’t do that and because they bypassed the system and had informal conversations with the executive team there’s no traceability, there’s no transparency, there’s no critical challenge."
Letby, originally from Hereford, was eventually convicted of murdering seven babies and attempting to murder a further seven, including two attempts on the same victim, all between June 2015 and June 2016.
She is serving 15 whole life prison terms and has had appeals against her convictions rejected by the Court of Appeal.
The inquiry continues.