Largest volume
(deliveries per day, flat monthly average)

780,538

JISCMAIL.AC.UK

• EPYC 7452 32-Core HT 512k (8192M)
• Windows Server 2019 Standard x64 Edition
• Postfix

Largest number of subscribers
(all lists on this server)

5,251,966

LISTS.PSU.EDU

• 16-CPU 2.4GHz Xeon Gold 6148 (32064M)
• Linux 3.10.0-1160.66.1.el7.x86_64
• sendmail 8.15.2/8.15.2

Largest number of lists

28,441

LISTES.ULAVAL.CA

• 2-CPU 2.5GHz Xeon (3840M)
• Linux 3.10.0-1160.62.1.el7.x86_64
• sendmail 8.14.7/8.13.8

Largest mailing list
(number of subscribers)

42,828

SAFETYNOTICE@LISTSERV.UC.EDU

• 4-CPU 2.6GHz Xeon Gold 6132 1M (8192M)
• Windows Server 2019 Datacenter x64 Edition
• EST