When I go to the new Mail log viewer in 7.x, I change the "Show 20 per page" (default view) to "Show 100 per page" and it continues to show the same amount of entries (the 20 it showed earlier). I also see this when selecting the "Show 50 per page".
I'm currently on 7.0.2, plan to upgrade to 7.0.3 tonight but didn't see this in the changelog so figured I'd report it anyways in case it's an issue in 7.0.3 too.
@d19dotca this does seem to work for me in 7.0.3 atleast, though we haven't really fixed anything related to pagination. Just to double check are you sure there are more events (i.e that there are actually 50 events) ? I had to remove all the mail events in 7.0.3 for a schema migration, but you haven't updated to 7.0.3 yet though, hmmm.
@girish Yes there are definitely more than 20 events, and the Next page still works to load more, it's just that dropdown to change how many records are shown at once which has an issue. I just updated to 7.0.3 so will try soon, unfortunately it seems the email logs were cleared after update, so there's no records in there at all now.