Please follow this steps those who are using mantis with the help of xampp
At C:\xampp\php\php.ini they must edit this fields
SMTP = smtp.gmail.com
smtp_port = 465
; For Win32 only.
;sendmail_from = postmaster@localhost
; XAMPP IMPORTANT NOTE (1): If XAMPP is installed in a base directory with spaces (e.g. c:\program filesC:\xampp) fakemail and mailtodisk do not work correctly.
; XAMPP IMPORTANT NOTE (2): In this case please copy the sendmail or mailtodisk folder in your root folder (e.g. C:\sendmail) and use this for sendmail_path.
; XAMPP: Comment out this if you want to work with fakemail for forwarding to your mailbox (sendmail.exe in the sendmail folder) "\ -t"
sendmail_path = "\"C:\xampp\sendmail\sendmail.exe\" -t"
; XAMPP: Comment out this if you want to work with mailToDisk, It writes all mails in the C:\xampp\mailoutput folder
; Force the addition of the specified parameters to be passed as extra parameters
; to the sendmail binary. These parameters will always replace the value of
; the 5th parameter to mail(), even in safe mode.
And save it then move to
Send mail xampp\sendmail\sendmail.ini and edit this field
; if your smtp server requires authentication, modify the following two lines
; force the sender to always be the following email address
; this will only affect the "MAIL FROM" command, it won't modify
; the "From: " header of the message content
Follow this and above steps for config_inc.php as posted by the atrol(admin) .
This steps resolved auto email notification issue for me, its working for me if any doubts you contact to my mail id : email@example.com
Hope this post helps to all those who are facing issue using xampp in mantis