There's a very interesting (free) virtual symposium being hosted by the University of Illinois on Email Archiving from June 13-15, 2023. The talks range from coverage of technical issues in email archiving practice through broad consideration of the role of email archives in research. For more context on the symposium, details and a registration link, see

https://emailarchivesgrant.library.illinois.edu/eas-program/

Clifford Lynch
Director, CNI