When attempting to send emails within BillQuick, ArchiOffice or EngineerOffice, Gmail users are getting errors related to using Simple Mail Transfer Protocol (SMTP), resulting in unsuccessful transmission.
When using SMTP through Google hosted email services, users should follow the configuration parameters set from this mail provider. If receiving these types of errors, it may be symptomatic of not having selected and set up these configuration options.
BillQuick, ArchiOffice and EngineerOffice supports SMTP only; therefore, select either SMTP relay service, Gmail SMTP server or Restricted Gmail SMTP server as a setup option. Click the link below for how to set up configuration options.
https://support.google.com/a/answer/176600?hl=en