On Fri, Jun 4, 2021 at 6:31 AM Tim Düsterhus, WoltLab GmbH via mailop < [email protected]> wrote:
> Hi Jaroslaw > > On 6/3/21 10:47 PM, Jaroslaw Rafa via mailop wrote: > >> Does anyone of you have practical experience with Google's feedback > >> loop mechanism and might be able to identify if we are doing > >> anything wrong or if it's just the low volume? > > > > What I can recommend from my own experience: > > 1) create some actual test account on Gmail > > 2) make your customer send an email to this account using your process > > 3) access the Gmail account and see if message actually went to Spam > folder. > > If yes: > > 4) check if Gmail indicates all three SPF, DKIM and DMARC on the message > as > > PASS. If not, you need to fix the one that is failing on your side and > > re-try. > > 5) If yes, send the headers of the message that was incorrectly > classified > > as spam (the headers as received on that Gmail account) to Google using > this > > form: https://support.google.com/mail/contact/bulk_send_new . They > > explicitly say in the form that they won't reply to you, but it often > really > > helps and your messages are no more going to Spam (at least that was in > my > > case). > > Thank you, this is useful. I was not aware of that form. I'll add it to > my bookmarks. > > We checked your suggestions back when setting up the system, but I just > rechecked registering an account with my personal Gmail in a sandbox > instance we use to test this type of stuff. The double opt-in > confirmation mail was delivered just fine directly into the inbox. > > Checking the email shows a PASS for both SPF and DKIM for > bounce.woltlab.cloud. We don't do DMARC, as explained in my sibling > reply. Gmail shows "Sender Name <[email protected]> via > bounce.woltlab.cloud" as the sender which is expected for our set-up and > nothing unusual, I have seen this for other newsletters I subscribed to > as well. > > However unfortunately this does not answer my specific question > regarding the 'Feedback-ID' header / Feedback Loop (i.e. > https://support.google.com/mail/answer/6254652/feedback-loop). The "Spam > Rate" dashboard in Google Postmaster Tools specifically explains: > > > Dieses Dashboard zeigt den Prozentsatz der von aktiven Nutzern als Spam > gemeldeten E-Mails im Vergleich zu den an den Posteingang gesendeten > E-Mails. [...] E-Mails, die direkt an den Spamordner zugestellt werden, > zählen nicht dazu. > > This translates as: > > "This dashboard shows the percentage of emails reported as spam compared > to all emails delivered into the INBOX. [...] Emails delivered directly > into the spam folder will not be counted here." > > So one (or more) recipients *actively* hit the "This is Spam" button on > ~27% of mails we delivered that one day. I wanted to use the Feedback > Loop mechanism *to find out* which of our customers sent those emails to > investigate in more detail. This is the entire purpose of the Feedback > Loop as implemented by Gmail, but it does not work for us due to reasons > that are unclear to me. > Generally speaking, when the dashboard shows you no data, there isn't enough data to show you. There are minimum levels of data required before it shows you anything in order not to be gamed or make it easy to find out specific accounts that are involved. I don't remember off the top of my head, but I think it's either 100 or 500 different accounts in the bucket you're looking at before there is data to be shown to you. Ie, the answer is never "one recipient". Brandon (it's been years since I've looked at the code and it's possible things have changed, so take it with a grain of salt)
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