justin/new-site
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

warmup: add Microsoft consumer (hotmail/outlook/live/msn) to cold-mail exclusions

Browse source 
Main-pool delivery was stuck ~60-67% (897+ daily spam-blocks). Audit of the main
listmonk found ~47k consumer mailboxes still enabled in OLD cold trucking lists
(built before the exclusion existed): 19k gmail, 27.5k yahoo-family + Microsoft
consumer. gmail alone was 101 of today's 909 550-5.7.1 blocks. Blocklisted all
~47k consumer addresses NOT in the protected FCC lists 3/6 (per the keep-gmails
decision for those warm lists). Also added Microsoft consumer domains to
BLOCKED_EMAIL_DOMAINS so the daily trucking builder stops re-adding them
(Microsoft SmartScreen silently junks/defers cold B2B mail -- a reputation drag
even though it doesn't 550 like Google). Enabled base 95455 -> 48707 (real
business/ISP domains).
This commit is contained in:
justin 2026-06-09 20:10:54 -05:00
parent 9fa2c86f01
commit 6f361d307d
1 changed files with 14 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

15
scripts/_email_exclusions.py
View file

@ -46,9 +46,22 @@ GOOGLE_CONSUMER_DOMAINS: frozenset[str] = frozenset({
"gmail.com", "googlemail.com",
})
# Microsoft consumer mailboxes (Outlook.com / Hotmail). Microsoft's cold-IP
# filtering (SmartScreen) tends to silently route cold B2B mail to Junk or
# soft-defer rather than hard-bounce, so it is less visible than Google's
# 550-5.7.1 but still a reputation drag (low engagement, spam-folder placement)
# on a warming IP. These are consumer mailboxes, not real B2B carrier contacts,
# so we hold them out of cold/warmup sends like the other consumer providers.
MICROSOFT_CONSUMER_DOMAINS: frozenset[str] = frozenset({
"hotmail.com", "outlook.com", "live.com", "msn.com", "hotmail.co.uk",
"hotmail.fr", "live.co.uk", "outlook.es", "passport.com", "windowslive.com",
})
# The full set of consumer domains we refuse to cold-mail. Extend here as we
# discover other reputation-sensitive providers.
BLOCKED_EMAIL_DOMAINS: frozenset[str] = YAHOO_FAMILY_DOMAINS | GOOGLE_CONSUMER_DOMAINS
BLOCKED_EMAIL_DOMAINS: frozenset[str] = (
YAHOO_FAMILY_DOMAINS | GOOGLE_CONSUMER_DOMAINS | MICROSOFT_CONSUMER_DOMAINS
)
def domain_of(email: str) -> str: