Sending from hotmail.co.uk stuck in Outbox

[Olivia_Rust]

@aeisou Do you have the program set to use SMTP for sending? If not, you could be affected by the recent increase in AirSync errors, which is the protocol used for sending from Outlook/Hotmail accounts in eM Client 9.

Please try the solution mentioned here:

[Airsync] Sending email error: VersionNotSupported?

Version 9 uses AirSync for sending emails, so if you’d like to keep using version 9, you can change the sending protocol to SMTP instead, and disable AirSync calendar and contacts. Here’s the registry configuration that will do that: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\eM Client] "UseAirSyncSendMail"=dword:00000000 Copy this in a text file and save it as a .reg file, then run it. Then go to Menu > Accounts and disable AirSync under Services.