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LISTSERV Statistics

These statistics are gathered daily by a monitor at L-Soft, which polls all LISTSERV sites that participate in the open LISTSERV network. LISTSERV sites operating in a closed environment are not included in these numbers.



LISTSERV Today

Number of public lists

17,781

Number of local lists

170,504

Total number of lists

188,285

Total membership (public+local)

39,131,653

Total messages delivered today

9,261,732

Last update: 2 Jul 2025



Largest LISTSERV® Sites

Largest volume
(deliveries per day, flat monthly average)

1,209,549

LISTSERV.STATE.NV.US

  • 4-CPU 2.1GHz Xeon Gold 6252 2x1M (8192M)
  • Windows Server 2016 Standard x64 Edition
  • Exim 4.95

Largest number of subscribers
(all lists on this server)

5,519,780

LISTS.PSU.EDU

  • 8-CPU 2.5GHz Xeon Gold 6248 (31808M)
  • Linux 5.14.0-570.21.1.el9_6.x86_64
  • sendmail 8.16.1/8.16.1

Largest number of lists

28,576

LISTES.ULAVAL.CA

  • 2-CPU 2.6GHz Xeon Gold 6348 (3712M)
  • Linux 5.14.0-362.24.1.el9_3.x86_64
  • sendmail 8.16.1/8.13.8

Largest mailing list
(number of subscribers)

43,113

SAFETYNOTICE@LISTSERV.UC.EDU

  • 4-CPU 2.6GHz Xeon (Icelake) 4M (16384M) (Icelake) 4M (16384M)
  • Windows Server 2019 Datacenter x64 Edition
  • EDT

Last update: 2 Jul 2025




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