SharePointOnline Workflows: SharePoint Designer Workflows Send Email from 2013 and 2010 Platform Workflows

Some constraints to be aware of when sending emails from SPD WF’s:

1) SP2010 Platform can send email to outside domain recepients (e.g: @gmail.com)

2) SP2013 Workflows on SPO do not throw an error when sending email to outside domain recepient, while OnPrem does throw an error

Some rules to follow:

1) if email is to be sent outside domain recepient, use SP2010 Platform workflow, call that SP2010 WF from a 2013 WF.

2) Make Sure to use “As String” or “Email Address”, do NOT use “Email Address as Semi Colon Delim” unless all users are SP site users in the Email action.

In a SPD 2010 WF: