For a novice, probably so. But it is a nice, concise solution (++). OTOH I might just reach for List::Flatten (or List::Flatten::Recursive if $TotalEmails were to be any deeper).

use List::Flatten;
my $tostring = join ',', flat @$TotalEmails;

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In reply to Re^11: Selecting DB by hippo
in thread Selecting DB by frank1

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