Papa Massata Diack was one of the IAAF officials alleged to have covered up doping offences. His father is the focus of a police investigation amid allegations he took money to cover up positive drugs tests by Russian athletes.
Davies strongly denied any wrongdoing.
"As Director of IAAF Communications it was one of my responsibilities to manage and promote the reputation of the IAAF," Davies said in a statement sent to The Associated Press.
"My email to the IAAF's then marketing consultant Papa Massata Diack ... was brain storming around media handling strategies to deal with the serious challenges we were facing around the image of the event. No plan was implemented following that email and there is no possibility any media strategy could ever interfere with the conduct of the anti-doping process."
Russia was last month banned from international athletics after a World Anti-Doping Agency independent commission found evidence of systemic doping and cover-ups.
Le Monde also said that Davies' email suggested that CSM, the sport agency chaired by IAAF President Sebastian Coe since January 2013, could help the IAAF in an unofficial PR campaign.
Davies said he "did not discuss these ideas with CSM and there has never been any agreement between the IAAF and CSM for any PR campaigns."
