In my application I am sending mails, I want to know if mail I sent is in a spam folder of receiver or not, I searched a lot but couldn't find any way How can I learn it?
Thanks for advices
In my application I am sending mails, I want to know if mail I sent is in a spam folder of receiver or not, I searched a lot but couldn't find any way How can I learn it?
Thanks for advices
You can do it only if you can access to your receiver's mail.
As answered here you can make some actions to prevent marking your mail as spam but it is not 100% guarantee that your mail will not be marked as spam
You can check if various mail servers are filtering your mails to spam folder by checking on https://litmus.com/spam-filter-tests
They have free services for 3 providers including google. If your spam test fails there, that means the service providers are marking your emails as spam.
It is not possible to learn , Every mail account such as outlook or gmail has different level spam filtering spam in outlook may not be spam in gmail.also people can set private spam filter to your mails,so nothing gives u a guarantee,u should read SMTP , and also u should improve new methods for example u should open a test accounts and when send mails send also these and u have idea what u will do