Ask the user to add the e-mail from address of your e-mails to their contacts list, so your e-mails would never been sent to spam again (for that users, at least).
It's a bit hacky, but can do a great work meanwhile you find another solution. On 18 mar, 07:52, Eric Ka Ka Ng <ngk...@gmail.com> wrote: > we use mail.send_mail() to send some important messages to our users through > an app hosted on GAE, in which the 'from' has been set to one of a > registered admin for the app. > > it works quite well for most users, except for some email service provider > (e.g. '...@yahoo.com.hk'), they would always automatically treat these emails > as spam and put them into spam box of the user's email account (if the user > has enabled the spam filtering feature, which is by default "ON") . in this > case, many of our users do not aware for these important messages (they > would seldom look into mails in their spambox) > > we have tried using different "from", "subject", "body" and the results are > the same. we suspect that it is the email server does matter, and maybe > before there were some other apps hosted on GAE sending spams to like '@ > yahoo.com.hk', so '...@yahoo.com.hk' would regard all emails sent from this > email server in GAE as spam. > > do anyone share similar experiences? or there should be other causes? any > ideas we can solve this problem? (successfully deliver the email to our > users using those email service without being regarded as spam) thx in > advanced! > > - eric -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.