late 2025, Google and Microsoft dropped new deliverability policies.

you probably heard about it. your LinkedIn feed was full of "cold email is DEAD" posts for about six weeks straight.

this is what actually happened.

Google and Microsoft cracked down on legacy education and nonprofit panel misuse. organisations had been exploiting discounted licensing meant for schools and charities to spin up bulk sending infrastructure on the cheap. the providers finally caught on and shut it down.

that's it. that's what changed.

they didn't kill cold email as a channel. they didn't build some magical AI that detects outbound and blocks it all. they closed a loophole that non-compliant operators had been abusing for years.

the impact was real though. agencies that had built their entire infrastructure on top of these panels got wiped out. campaigns that had been working for months suddenly started hitting 100% spam rates. companies were burning through domains every 2-3 weeks because the foundation underneath was never compliant in the first place.

but if your infrastructure was properly set up, authenticated, warmed correctly, and running on legitimate accounts?

nothing changed. your emails kept landing in Primary.

the channel isn't broken. the operators are.

are you affected? (honest self-check)

answer yes or no to each one.

• [ ] are you running inboxes on education or nonprofit licensing panels?
• [ ] have your spam rates jumped significantly since late 2025 without you changing anything?
• [ ] are you burning through domains faster than every 4-6 months?
• [ ] is your DNS (SPF, DKIM, DMARC) configured properly on every sending domain? (if you don't know, that's a "no")
• [ ] are you still running the same infrastructure setup you had in 2023 with zero changes?

if you answered yes to even one of those first four, or no to the DNS question, keep reading. the rest of this kit is for you.

if you answered no across the board and your DNS is sorted, you're probably fine. skim Section 3 to double-check your compliance stack, then jump to Section 5 for the ongoing maintenance calendar.