"This message is to notify you that we will be performing system upgrade procedures starting at 09:00 PM CST, 02/10/2022 that will result in a service outage for approximately 3 hour(s). Although your mail site will be unavailable during this time, we will continue collecting your mail. We appreciate your patience during these upgrade procedures. Please contact us if you have any questions."
At 10:00 pm the site responds with this message
"This message is to notify you that we will be performing system upgrade procedures starting at 09:00 PM CST, 02/10/2022 that will result in a service outage for approximately 3 hour(s). Although your mail site will be unavailable during this time, we will continue collecting your mail. We appreciate your patience during these upgrade procedures. Please contact us if you have any questions."