Email Multi destination address

[fleeceable]

I'm using script like this and it works even if one of the emails are empty.

Code:

alarm = grp.getvalue('10/0/31')

email1 = grp.getvalue('32/6/1')
email2 = grp.getvalue('32/6/2')
email3 = grp.getvalue('32/6/3')

if email1~='' then
  if email2~='' then
    if email3~='' then
      emails = {email1,email2,email3}
    else
      emails = {email1,email2}
    end
  else
    emails = {email1}
  end
else
  if email2~='' then
    if email3~='' then
      emails = {email2,email3}
    else
      emails = {email2}
    end
  else
    if email3~='' then
      emails = {email3}
    end
  end
end
 
if alarm then
  mail(emails, 'MAJA valvekeskuse alarm', 'Tere! <br><br>Valvekeskuse poolt on tuvastatud MAJA häire! Palun vaadake täpsemalt visualiseeringust.<br><br><br><i>See email on genereeritud automaatikasüsteemi poolt. Palun mitte sellele emailile vastata!')
end