HubSpot – Some service email sends from to Yahoo emails are not being delivered

Nov 1, 16:22 EDT
Resolved – From October 31 at 6:30 AM EDT (UTC -04:00) until November 1 at 6:30 AM EDT, some tracked service emails sent from portals without a custom tracking domain to Yahoo inboxes were not delivered. Deliveries are now succeeding consistently for new emails.

Nov 1, 16:05 EDT
Monitoring – We’re seeing deliveries to Yahoo domains succeeding consistently as of 7am ET. We’re monitoring the tools closely to make sure deliveries continue to be stable.

Nov 1, 15:18 EDT
Investigating – Since October 31 at 6:35am ET, some tracked service emails being sent to Yahoo inboxes are not being delivered. We’re investigating the cause of this issue.

Affected customers can restore delivery by connecting a custom tracking domain.