Hi Chris75, Thank you for replying. Ive checked my iCloud (preferred email address) and the two-step authentication for Apple ID is already set up and active. However, I can't see anywhere in the NCH 'email settings' in which to enter a verification code... Thanks again
Please help - going crazy! Spent three days trying to configure my emails on Express Accounting. I use a MacBook, have tried two email accounts (iCloud and yahoo), disabled my Mcafee and I'm still get the same pop up message; "EMAIL SEND TEST Email authentication username or password not accepted" Ive tripple checked and my email, password and SMTP details are all correct. Please can anyone help? Many thanks in advance.