Connecting To Gmail IMAP PHP "Couldn't Open Stream"
Answer : You need port 993 , the SSL IMAP port. Port 995 is the SSL POP3 port. I think Gmail's IMAP can only be accessed on port 993. $hostname = "{imap.gmail.com:993/imap/ssl/novalidate-cert}"; I had the same error and found a different solution. I have added debug info into host: "{imap.gmail.com:993/debug/imap/ssl/novalidate-cert}INBOX"; When I read php error log, I found Unknown: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure) (errflg=1) in Unknown on line 0 Open link, and follow instructions. Search for Your app might not support the latest security standards. Try changing a few settings to allow less secure apps access to your account. Click on link and enable less secure app access. Then it works for me.