On Monday, 10/18/2021, from approximately 11:40 a.m. until 2:08 p.m. (ET), users experienced delays with login-related emails including email confirmations, passwordless logins, and passwordless reset emails.
These issues were caused by an unexpected increase in email traffic, causing email processing to slow down. Once extra servers were added to process the traffic, login-related emails returned to normal performance by 2:08 p.m. (ET).
To prevent this type of issue in the future, we have started to implement a new priority system for login-related emails.
No data loss occurred as a result of this issue.