Don't do it with one regex, instead split it first into records. 
use Data::Dumper;
for my $record (split m/\n\n\n/, $tempStr){
   my %user_info;
   for (split m/\n/, $record){
       if (m/^User (.*)$/){
           $user_info{name} = $1;
       } elsif (m/^(\w+)\s*=\s*(.*)$/){
            $user_info{$1} = $2;
       } 
   }
   print Dumper \%user_info if %user_info;
}

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(Update: Code now actually works).

Note that your email addresses a@b.com try to interpolate the array @b if the string is in double quotes, so please use single quotes (or even better, a here-doc) instead.

In reply to Re: regexp parsing from a big string... by moritz
in thread regexp parsing from a big string... by dani_cv

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