Filtering emails in your email client using email headers gives you more granularity than just filtering by subject and sender address. Notification emails that are configured to be sent instantly include email headers. For information on configuring email notification frequency, see Configuring notification intervals.
Email headers are automatically generated for:
X-HTH: HelixTeamHub identifies that the email is from Helix TeamHub
X-HTH-Company: companyshortname identifies which company the email is from if applicable
X-HTH-Project: projectshortname identifies which project the email is from if applicable
X-HTH-Repository: reposhortname identifies which repository the email is from if applicable