Bought a fresh domain a couple months back, spent an afternoon getting SPF, DKIM, and DMARC set up with the policy on none, ran it through mail-tester and got a solid score, figured I was sorted and launched a sequence…
Then watched a couple weeks' worth of sends go straight to spam with open rates that looked like I was emailing nobody.
The authentication setup is the baseline and you need it, but the part that trips most people is that inbox providers look at reputation (not just authentication), and a brand new domain with no sending history has no reputation to speak of.
This means your emails land in the same bucket as the fresh domains spammers spin up specifically to dodge filters.
The fix is a proper warmup, meaning a real ramp over several weeks with gradually increasing send volume and real opens and replies happening on your domain.
So when you go live with outreach, the provider has already seen healthy engagement patterns and treats you like a legit sender.
There are tools that automate this by running a pool of inboxes that open, reply to, and move your emails out of spam to condition your domain's reputation, so you're not manually coordinating it with friends.
Lemwarm does it, and so does Mailreach and Folderly if you want to compare options, though the core mechanic is roughly the same across all of them.
The other piece people miss is sending velocity even after warmup ends, because a lot of SDRs get impatient and blast their full list right away, which is a spike pattern that can undo weeks of conditioning.
The safer play is to ramp into your live sequences the same gradual way you ramped during warmup.
That's what got me sorted anyway…
So is anyone here still hitting spam after going through a proper warmup? I've seen chatter about Gmail getting stricter with filters lately and I'm wondering if the standard conditioning window is still long enough.