User invitation emails never received

Problem

Invitation is sent successfully to a user for given organization, however, user never receive the email that has the invitation link.

Root cause

Split backend servers use SendGrid email service to send emails, this is an enterprise subscription-based service which is usually individually targeted  for businesses. It is possible that emails from SendGrid is not individually targeted which will block incoming emails from Split.io.

Solution

Contact your IT and request an individually targeted SendGrid service.