I installed WP Mail SMTP a month ago and so far everything was working great. I configured my web form to use my outlook email id on my custom domain to send mails and it is working all fine. But recently i discovered some resent mails in my sent items. Looking closely revealed that somehow mails from my sent items are being sent again randomly, sometimes even 3-4 times. I have no scheduler or anything and i access my account from a browser on a PC. So could it be a problem with the WP Mail SMTP plugin ?? Any help is highly appreciated.