My local copy in SeaMonkey shows 25 posts in 10 threads.
For May 21 https://lists.debian.org/debian-user/2021/05/mail2.html shows
*ONLY* 8 posts in *ONLY* threads for that date.
- Missing posts at https://lists.debian.org/debian-user/2021... Richard Owlett
- Re: Missing posts at https://lists.debian.org/debian-... Boyuan Yang
- Re: Missing posts at https://lists.debian.org/deb... Richard Owlett
- Re: Missing posts at https://lists.debian.org... Adam D. Barratt
