If all you are doing is putting variables into the strings -- assuming that you are creating the strings also -- just put a marker in the string and replace it with a regex substitution. Instead of writing "Hello $dbhash{name}, you have...", just write "Hello NAME, you have..." and do

foreach $string_to_fill_in (@strings) {
  $string_to_fill_in =~  s/\bNAME\b/$dbhash{name}/g;
  # repeat for as many parameters as you have
}
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If you need more complex behavior, consider storing a template string from one of the major templating modules (e.g. HTML::Template) and use the template module to fill in your data.