How to setup SendGrid for our outgoing email service
If you are having any issues with the GoToMyAccounts internal sending service, or using your own email service to send outgoing email, there are alternatives you can implement. SendGrid is one of those services.
This video shows how to setup the integration.
The following ip addresses should be whitelisted for sending through SendGrid. These are the host ip addresses used by the GoToMyAccounts Email Sender Services.
149.28.226.126 45.76.10.36 66.135.11.68 144.202.15.216 208.167.248.231