We prefer using the server’s local inbuilt MTA (e.g, Sendmail or Exim) as it is generally faster than connecting to an SMTP server.


Sendmail does not exist for Windows servers. You will need to connect to an SMTP server, and if that is on the same box as arpReach then it will be fast. We do not have any recommendations for specific SMTP server software to install. Your web host can assist you with that.


Remote SMTP providers who can manage your delivery for you include:

  • SMTP.com
  • SendGrid
  • Amazon SES