Ask HN: What to do when Google is about to kill your business?

We have a Domain reputation of 100% as per Google's own tool (Postmaster), and we are following all of Google's best practices -> SPF is set correctly, DKIM, DMARC, the emails are only sent when the customer selects to receive an email, and we include a visible unsubscribe link.

Our whole business is paralyzed, and Google customer support doesn't seem able to identify the issue. It has been 2 weeks.

Is there something else we should be doing?

When you've sent it, add a comment here so I know to look at my mailserver logs in case my mail filter hard rejects the mail.

Just for what it's worth, sometimes when a company's marketing is really obnoxious I'll mark it as spam just to fuck with them.

If there are enough people doing that, one could imagine that Google's internal filters would begin seeing the whole domain, or some random boilerplate string in the emails as an indicator of spam.

Have you started manually flagging messages as "not spam" on mass?

I get so much of this, I sign up for a service to check it out, decide it's not actually a good fit for me but in the process of signing up the company added my email to loads of mailing lists like product updates, advertising, policy changes, etc. etc.

The company doesn't see this as spam. However, it is spam and whenever I receive any of this mail, whether there's a (legally required) unsubscribe link or not, I always mark it as spam.

Don't send email to people unless they specifically ask you to send it. Mailing lists must be opt-in, not opt-out. Otherwise they are spam.

If this is why your mails are being flagged as spam then I agree with Google here. If it's another reason then you have my sympathy.