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Global

Provider requirements and standards that apply wherever you send from.

24 rules with sources for this place · Filter by role and geo · Full map

YoursNew on siteHygiene · Global

A spam-trap hit is a collection or hygiene failure

Hitting a means your list source or hygiene failed — not bad luck.

Skip if You only mail freshly addresses with no imports, partners or multi-year segments—and you still monitor .

YoursContent · Global · Apple

Apple Mail replaces your preheader with an AI summary

Apple can show its own summary of your email where the preheader used to win attention — many people never open.

YoursNew on siteAuth · Global

DMARC p=none is monitoring, not enforcement

p=none means watch and report — it does not tell receivers to block impostors.

Skip if You already run p=quarantine or p=reject with clean reports and no unknown senders.

YoursNew on siteHygiene · Global

Inactive recipients need a documented sunset policy

Stop regular marketing to people who never engage — or re-ask . There is no magic universal day count from Gmail.

Skip if Your entire list is recent with no multi-year dormant tail.

YoursMetrics · Global · Klaviyo

Klaviyo counts Apple machine opens toward revenue by default

Klaviyo can credit revenue to an Apple machine open — so email revenue can look higher than reality vs Shopify.

Skip if You are not on Klaviyo, or nobody ever puts your email revenue next to the Shopify number.

YoursMetrics · Global · Apple

Open rate is not a measurement any more

is broken as a KPI for a huge slice of Apple users — stop managing the business on opens alone.

Skip if Nothing in your account segments, suppresses or optimises on . Check before you assume that.

YoursUpdatedHygiene · Global

Signup forms need anti-automation controls

Bots will stuff your form with junk and — CAPTCHA, rate limits, and protect the list.

Skip if You have no public signup path and only manually load confirmed addresses (rare).

YoursNew on siteLegal · Global · US · EU

Transactional vs commercial email is classification, not a subject-line trick

Calling a promo “” in your does not make it transactional under the law.

Skip if You only send pure service messages with no promotional content, under clear account relationships.

SharedNew on siteAuth · Global

An empty p= in a DKIM record is a revoked key, not a published one

p= with nothing after it does not mean the key is missing.

Skip if You have never rotated a key and publish exactly the selectors your platform gave you.

SharedUpdatedAuth · Global

BIMI shows a logo after DMARC — it is not a bulk-sender mandate

can show your logo after strong — it is not on Gmail/Yahoo’s bulk “must do” list.

Skip if You do not care about logos in the inbox chrome and your auth/complaints are already clean.

SharedNew on siteHygiene · Global

Bounce suppression is platform-specific, not universal

There is no universal “ seven times” rule — Klaviyo, Mailchimp, and Braze each define bounce differently.

Skip if You send no marketing email.

SharedUpdatedInbox · Global

Complaint feedback loops are provider-specific — Gmail is not Yahoo CFL

There is no single FBL — Yahoo, Microsoft, and Gmail expose complaints differently.

Skip if You send negligible volume to consumer webmail and never look at complaint metrics.

SharedAuth · Global

DKIM passing is not DKIM aligned

A green “ pass” can still mean spam folder if the signature is not for the brand in the .

Skip if You have a branded sending domain configured in everything that sends as you, and somebody has actually read a aggregate report this quarter.

SharedUpdatedHygiene · Global

Fix the cause before requesting blocklist removal

A blocklist hit is a signal, not a fine — fix the cause first; paid delisting without that is theatre.

Skip if You send no email and expose no domain in email .

SharedInbox · Global · Gmail

Gmail enforces authentication, PTR, TLS and a 0.30 percent spam rate

Gmail only trusts senders that prove who they are and keep “report spam” rare — under about 0.3%.

Skip if You never send to personal Gmail addresses.

SharedNew on siteInbox · Global · Apple

iCloud Mail rejects bulk mail that misses Apple's sender requirements

iCloud can reject bulk mail that fails Apple’s sender rules — and you will not get a classic spam-complaint feedback loop.

Skip if You have no recipients on Apple's iCloud Mail domains.

SharedNew on siteInbox · Global · Microsoft

Microsoft SNDS and JMRP expose per-IP and junk-report data

Microsoft SNDS/JMRP show Outlook IP health and junk reports — they diagnose; they do not auto-fix delivery.

Skip if You send no mail to Outlook.com consumer domains.

SharedAuth · Global · Microsoft

Outlook rejects unauthenticated mail from high-volume senders

Microsoft will bounce mail that is not authenticated — often with error 550 5.7.515.

Skip if You send under 5,000 messages a day to Microsoft consumer addresses.

SharedNew on siteAuth · Global

SPF stops evaluating after ten DNS lookups and returns permerror

Every include: is a lookup, and you get ten.

Skip if Your record contains three or four includes and has not changed in a year.

SharedUpdatedInbox · Global · Yahoo

Yahoo requires authentication and a spam rate below 0.3 percent

Yahoo has the same kind of bulk rules as Gmail: authenticate, keep complaints under 0.3%, honour fast.

Skip if You never send to Yahoo-hosted consumer domains.

Already handledInbox · Global

Bulk senders must support one-click unsubscribe

Gmail and Yahoo want marketing mail to in one click from the inbox chrome — your usually already does this.

Skip if You are on a mainstream and it is the only thing that emails your list.

FYINew on siteInbox · Global · Gmail

Gmail Promotions annotations are eligible, not guaranteed

Gmail promo annotations can make a deal look richer — they are not a promise of and do not fix .

Skip if You do not care about Gmail Promotions-tab UI chrome.

FYIMetrics · Global · Gmail

Google Postmaster Tools retired the reputation dashboards

Google removed the colour badges in Postmaster — , auth, and delivery errors still matter.

Skip if You never opened Postmaster Tools in the first place.

FYIMetrics · Global · Klaviyo

Klaviyo holdout groups need 400,000 profiles

Honest email lift needs — Klaviyo’s free holdout tool needs about 400,000 profiles; most brands are under that.

Skip if You are not on Klaviyo.