Email Connectivity Issue: MAPI error code 80040154 (340) at line 947

Nicola_7371489 Member Posts: 4
edited February 2017 in Reckon Accounts (Desktop)
I use gmail rather than outlook but as I understand Reckon Accounts Enterprise 2015 can only email using Outlook, so I have opened outlook 13 and synced my gmail to that. However, I still can't email remittance advice (or anything else) as I get MAPI error code 80040154 (340) at line 947 in sendemail.cpp
I am not very tech savvy so a step by step guide on how to correct this issue would be most appreciated!