Recent Posts
About My Email
- steve
- Jan 2, 2024
Happy 2024, everyone!
We’ve released a shiny new tool to let folks self-check a lot of common questions we see about email requirements.
Read More
Read MoreYahoogle Requirements Update
- steve
- Nov 9, 2023
Since I wrote about it last month the requirements for bulk senders to Yahoo and Google have changed a little.
Read MoreCan you STARTTLS?
- steve
- Oct 25, 2023
Email supports TLS (Transport Layer Security), what we used to call SSL.
Read MoreCustomer subdomain authentication
- steve
- Oct 20, 2023
EDIT: Now with a production-ready implementation I talk about more here.
Read MoreWildcards and DKIM and DMARC, oh my!
- steve
- Oct 18, 2023
If you’re an ESP with small customers you may have looked at the recent Google / Yahoo requirements around DMARC-style alignment for authentication and panicked a bit.
Read MoreDeferrals at Microsoft
- steve
- Oct 11, 2023
If you’re seeing a lot of “451 4.7.500 Server busy. Please try again later” from Office365 this morning you’re not alone.
Read MoreWhen Asking a Question
- steve
- Oct 5, 2023
A lot of beginner questions about email delivery aren’t about broad strategies for success, or technical details about authentication, or concerns about address acquisition. They’re something like:
Read MoreValidity Charging for Feedback Loop Emails
- laura
- Sep 14, 2023
History
Return Path was a major driver for the establishment of Feedback Loops (FBLs) back in the mid to late 2000s. They worked with a number of ISPs to help them set up FBLs and managed the signup and validation step for them. In return for providing this service to senders and receivers, they used this data as part of their certification process and their deliverability consulting. Return Path had a strong corporate ethos of improving the overall email ecosystem that originated from the CEO and permeated through the whole organization.
Read MoreCategories
Tags
- 2010
- 2016
- 2fa
- 419
- 4xx
- 554
- 5xx
- @
- Aarp
- Abacus
- Abandoned
- Aboutmyemail
- Abuse
- Abuse Desk
- Abuse Enforcement
- Abuse Prevention
- Academia
- Accreditation
- Acme
- Acquisition
- Address Book
- Addresses
- Administrivia
- Adsp
- Advanced Delivery
- Advertiser
- Advertising
- Advice
- Affiliate
- Affiliates
- After the Email
- Alerts
- Algorithm
- Alice
- Alignment
- Allcaps
- Alt Text
- AMA
- Amazon
- Amp
- Amsterdam
- Analysis
- Anecdotes
- Anti-Spam
- Anti-Spam Laws
- Anti-Spammers
- Antwort
- AOL
- Appeals
- Appearances
- Appending
- Apple
- Arc
- Arf
- Arrest
- Arrests
- Ascii
- Asides
- Ask Laura
- Askwttw
- Assertion
- Assumptions
- ATT
- Attacks
- Attention
- Attrition
- Audit
- Authentication
- Authentication. BT
- Autonomous
- Award
- B2B
- B2C
- Backhoe
- Backscatter
- Backus-Naur Form
- Banks
- Barracuda
- Barry
- Base64
- Base85
- Bcc
- Bcp
- Bear
- Bears
- Behaviour
- Benchmark
- BESS
- Best Practices
- Bgp
- BIMI
- Bit Rot
- Bitly
- Bizanga
- Black Friday
- Blackfriday
- Blacklist
- Blacklists
- Blast
- Blo
- Block
- Blockin
- Blocking
- Blocklist
- Blocklisting
- Blocklists
- Blocks
- Blog
- Blog Links
- Blogroll
- Blogs
- Bob
- Boca
- Bofa
- Book Review
- Bot
- Botnet
- Botnets
- Bots
- Bounce
- Bounce Handling
- Bounces
- Branding
- Brands
- Breach
- Breaches
- Breech
- Bronto
- Browser
- Bsi
- Bucket
- Bulk
- Bulk Folder
- Bulk Mail
- Business
- Business Filters
- Buying Leads
- Buying Lists
- C-28
- CA
- Caa
- Cabbage
- Cache
- Cadence
- CAH
- California
- Campaign
- CAN SPAM
- Canada
- Candy
- Candycandycandy
- Canonicalization
- Canspam
- Captcha
- Career Developmnent
- Careers at WttW
- Cargo Cult
- Case Law
- Cases
- CASL
- Cat
- Cbl
- CDA
- Cert
- Certification
- CFL
- CFWS
- Change
- Charter
- Cheat
- Cheese
- Choicepoint
- Choochoo
- Christmas
- Chrome
- Cidr
- Cisco
- Civil
- Clear.net
- Clearwire.net
- Cli
- Click
- Click Through
- Click Tracking
- Clicks
- Clickthrough
- Client
- Cloudflare
- Cloudmark
- Cname
- Co-Reg
- Co-Registration
- Cocktail
- Code
- COI
- Comcast
- Comments
- Commercial
- Communication
- Community
- Comodo
- Comparison
- Competitor
- Complaint
- Complaint Rates
- Complaints
- Compliancce
- Compliance
- Compromise
- Conference
- Conferences
- Confirmation
- Confirmed (Double) Opt-In
- Confirmed Opt-In
- Congress
- Consent
- Conservatives
- Consistency
- Constant Contact
- Consultants
- Consulting
- Content
- Content Filters
- Contracts
- Cookie
- Cookie Monster
- COPL
- Corporate
- Cost
- Court Ruling
- Cox
- Cox.net
- Cpanel
- Crib
- Crime
- CRM
- Crowdsource
- Crtc
- Cryptography
- CSRIC
- CSS
- Curl
- Customer
- Cyber Monday
- Czar
- Data
- Data Hygiene
- Data Security
- Data Segmentation
- Data Verification
- DBL
- Dbp
- Ddos
- Dea
- Dead Addresses
- Dedicated
- Dedicated IPs
- Defamation
- Deferral
- Definitions
- Delays
- Delisting
- Deliverability
- Deliverability Experts
- Deliverability Improvement
- Deliverability Summit
- Deliverability Week
- Deliverability Week 2024
- Deliverabiltiy
- DeliverabiltyWeek
- Delivery Blog Carnival
- Delivery Discussion
- Delivery Emergency
- Delivery Experts
- Delivery Improvement
- Delivery Lore
- Delivery News
- Delivery Problems
- Dell
- Design
- Desks
- Dhs
- Diagnosis
- Diff
- Dig
- Direct Mag
- Direct Mail
- Directives
- Discounts
- Discovery
- Discussion Question
- Disposable
- Dk
- DKIM
- Dkimcore
- DMA
- DMARC
- DNS
- Dnsbl
- Dnssec
- Docs
- Doingitright
- Domain
- Domain Keys
- Domain Reputation
- DomainKeys
- Domains
- Domains by Proxy
- Dontpanic
- Dot Stuffing
- Dotcom
- Double Opt-In
- Dublin
- Dyn
- Dynamic Email
- E360
- Earthlink
- Ec2
- Ecoa
- Economics
- ECPA
- Edatasource
- Edns0
- Eec
- Efail
- Efax
- Eff
- Election
- Email Address
- Email Addresses
- Email Change of Address
- Email Client
- Email Design
- Email Formats
- Email Marketing
- Email Strategy
- Email Verification
- Emailappenders
- Emailgeeks
- Emails
- Emailstuff
- Emoji
- Emoticon
- Encert
- Encryption
- End User
- Endusers
- Enforcement
- Engagement
- Enhanced Status Code
- Ennui
- Entrust
- Eol
- EOP
- Epsilon
- Esp
- ESPC
- ESPs
- EU
- Ev Ssl
- Evaluating
- Events
- EWL
- Exchange
- Excite
- Expectations
- Experience
- Expires
- Expiring
- False Positives
- FAQ
- Fathers Day
- Fbl
- FBL Microsoft
- FBLs
- Fbox
- FCC
- Fcrdns
- Featured
- Fedex
- Feds
- Feedback
- Feedback Loop
- Feedback Loops
- Fiction
- Filter
- Filter Evasion
- Filtering
- Filterings
- Filters
- Fingerprinting
- Firefox3
- First Amendment
- FISA
- Flag Day
- Forensics
- Format
- Formatting
- Forms
- Forwarding
- Fraud
- Freddy
- Frequency
- Friday
- Friday Spam
- Friendly From
- From
- From Address
- FTC
- Fussp
- Gabbard
- GDPR
- Geoip
- Gevalia
- Gfi
- Git
- Giveaway
- Giving Up
- Global Delivery
- Glossary
- Glyph
- Gmail
- Gmails
- Go
- Godaddy
- Godzilla
- Good Email Practices
- Good Emails in the Wild
- Goodmail
- Google Buzz
- Google Postmaster Tools
- Graphic
- GreenArrow
- Greylisting
- Greymail
- Groupon
- GT&U
- Guarantee
- Guest Post
- Guide
- Habeas
- Hack
- Hacking
- Hacks
- Hall of Shame
- Harassment
- Hard Bounce
- Harvesting
- Harvey
- Hash
- Hashbusters
- Headers
- Heartbleed
- Hearts
- HELO
- Help
- Henet
- Highspeedinternet
- Hijack
- History
- Holiday
- Holidays
- Holomaxx
- Hostdns4u
- Hostile
- Hostname
- Hotmail
- How To
- Howto
- Hrc
- Hsts
- HTML
- HTML Email
- Http
- Huey
- Humanity
- Humor
- Humour
- Hygiene
- Hypertouch
- I18n
- ICANN
- Icloud
- IContact
- Identity
- Idiots
- Idn
- Ietf
- Image Blocking
- Images
- Imap
- Inbox
- Inbox Delivery
- Inboxing
- Index
- India
- Indiegogo
- Industry
- Infection
- Infographic
- Information
- Inky
- Inline
- Innovation
- Insight2015
- Integration
- Internationalization
- Internet
- Intuit
- IP
- IP Address
- Ip Addresses
- IP Repuation
- IP Reputation
- IPhone
- IPO
- IPv4
- IPv6
- Ironport
- Ironport Cisco
- ISIPP
- ISP
- ISPs
- J.D. Falk Award
- Jail
- Jaynes
- JD
- Jobs
- Json
- Junk
- Juno/Netzero/UOL
- Key Rotation
- Keybase
- Keynote
- Kickstarter
- Kraft
- Laposte
- Lavabit
- Law
- Laws
- Lawsuit
- Lawsuits
- Lawyer
- Layout
- Lead Gen
- Leak
- Leaking
- Leaks
- Legal
- Legality
- Legitimate Email Marketer
- Letsencrypt
- Letstalk
- Linked In
- Links
- List Hygiene
- List Management
- List Purchases
- List the World
- List Usage
- List-Unsubscribe
- Listing
- Listmus
- Lists
- Litmus
- Live
- Livingsocial
- London
- Lookup
- Lorem Ipsum
- Lycos
- Lyris
- M3AAWG
- Maawg
- MAAWG2007
- Maawg2008
- MAAWG2012
- MAAWGSF
- Machine Learning
- Magill
- Magilla
- Mail Chimp
- Mail Client
- MAIL FROM
- Mail Privacy Protection
- Mail Problems
- Mail.app
- Mail.ru
- Mailboxes
- Mailchimp
- Mailgun
- Mailing Lists
- Mailman
- Mailop
- Mainsleaze
- Maitai
- Malicious
- Malicious Mail
- Malware
- Mandrill
- Maps
- Marketer
- Marketers
- Marketing
- Marketo
- Markters
- Maths
- Mcafee
- Mccain
- Me@privacy.net
- Measurements
- Media
- Meh
- Meltdown
- Meme
- Mentor
- Merry
- Message-ID
- Messagelabs
- MessageSystems
- Meta
- Metric
- Metrics
- Micdrop
- Microsoft
- Milter
- Mime
- Minimal
- Minshare
- Minute
- Mit
- Mitm
- Mobile
- Models
- Monitoring
- Monkey
- Monthly Review
- Mpp
- MSN/Hotmail
- MSN/Hotmail
- MTA
- Mua
- Mutt
- Mx
- Myths
- Myvzw
- Needs Work
- Netcat
- Netsol
- Netsuite
- Network
- Networking
- New Year
- News
- News Articles
- Nhi
- NJABL
- Now Hiring
- NTP
- Nxdomain
- Oath
- Obituary
- Office 365
- Office365
- One-Click
- Only Influencers
- Oops
- Opaque Cookie
- Open
- Open Detection
- Open Rate
- Open Rates
- Open Relay
- Open Tracking
- Opendkim
- Opens
- Openssl
- Opt-In
- Opt-Out
- Optonline
- Oracle
- Outage
- Outages
- Outblaze
- Outlook
- Outlook.com
- Outrage
- Outreach
- Outsource
- Ownership
- Owning the Channel
- P=reject
- Pacer
- Pander
- Panel
- Password
- Patent
- Paypal
- PBL
- Penkava
- Permission
- Personalities
- Personalization
- Personalized
- Pgp
- Phi
- Philosophy
- Phish
- Phishers
- Phishing
- Phising
- Photos
- Pii
- PIPA
- PivotalVeracity
- Pix
- Pluscachange
- Podcast
- Policies
- Policy
- Political Mail
- Political Spam
- Politics
- Porn
- Port25 Blocking
- Postfix
- Postmaster
- Power MTA
- Practices
- Predictions
- Preferences
- Prefetch
- Preview
- Primers
- Privacy
- Privacy Policy
- Privacy Protection
- Private Relay
- Productive Mail
- Promotions
- Promotions Tab
- Proofpoint
- Prospect
- Prospecting
- Protocols
- Proxy
- Psa
- PTR
- Public Suffix List
- Purchased
- Purchased Lists
- Purchases
- Purchasing Lists
- Questions
- Quoted Printable
- Rakuten
- Ralsky
- Rant
- Rate Limiting
- Ray Tomlinson
- Rc4
- RDNS
- Re-Engagement
- Read
- Ready to Post
- Readytopost
- Real People
- Realtime Address Verification
- Recaptcha
- Received
- Receivers
- Recipient
- Recipients
- Redirect
- Redsnapper
- Reference
- Registrar
- Registration
- Rejection
- Rejections
- Rejective
- Relationship
- Relevance
- Relevancy
- Removals
- Render Rate
- Rendering
- Replay
- Repost
- Repudiation
- Reputation
- Requirements
- Research
- Resources
- Responsive
- Responsive Design
- Responsys
- Retail
- Retired Domains
- Retro
- Return Path
- Return Path Certified
- ReturnPath
- Reunion.com
- Reverse Dns
- RFC
- RFC2047
- RFC2821/2822
- RFC5321/5322
- RFC5322
- RFC8058
- RFC821/822
- RFCs
- Roadr
- RoadRunner
- Rodney Joffe
- ROKSO
- Role Accounts
- Rollout
- RPost
- RPZ
- Rule 34
- Rules
- Rum
- Rustock
- S.1618
- SaaS
- Sales
- Salesforce
- Sass
- SBCGlobal
- Sbl
- Scam
- Scammers
- Scams
- Scanning
- Scraping
- Screamer
- Screening
- Script
- Sec
- Secure
- Security
- Segmentation
- Selligent
- Send
- Sender
- Sender Score
- Sender Score Certified
- Senderbase
- Senderid
- Senders
- Senderscore
- Sendgrid
- Sending
- Sendy
- Seo
- Service
- Services
- Ses
- Seth Godin
- SFDC
- SFMAAWG2009
- SFMAAWG2010
- SFMAAWG2014
- Shared
- Shell
- Shouting
- Shovel
- Signing
- Signups
- Silly
- Single Opt-In
- Slack
- Slicing
- Smarthost
- Smiley
- Smime
- SMS
- SMTP
- Snds
- Snowshoe
- Soa
- Socia
- Social Media
- Social Networking
- Soft Bounce
- Software
- Sony
- SOPA
- Sorbs
- Spam
- Spam Blocking
- Spam Definition
- Spam Filtering
- Spam Filters
- Spam Folder
- Spam Law
- Spam Laws
- Spam Reports
- Spam Traps
- Spam. IMessage
- Spamarrest
- Spamassassin
- Spamblocking
- Spamcannibal
- Spamcon
- Spamcop
- Spamfiltering
- Spamfilters
- Spamfolder
- Spamhaus
- Spamhause
- Spammer
- Spammers
- Spammest
- Spamming
- Spamneverstops
- Spamresource
- Spamtrap
- Spamtraps
- Spamza
- Sparkpost
- Speaking
- Special Offers
- Spectre
- SPF
- Spoofing
- SproutDNS
- Ssl
- Standards
- Stanford
- Starttls
- Startup
- State Spam Laws
- Statistics
- Storm
- Strategy
- Stripo
- Stunt
- Subject
- Subject Lines
- Subscribe
- Subscriber
- Subscribers
- Subscription
- Subscription Process
- Success Stories
- Suing
- Suppression
- Surbl
- Sureclick
- Suretymail
- Survey
- Swaks
- Syle
- Symantec
- Tabbed Inbox
- Tabs
- Tagged
- Tagging
- Target
- Targeting
- Techincal
- Technical
- Telnet
- Template
- Tempo
- Temporary
- Temporary Failures
- Terminology
- Testing
- Text
- Thanks
- This Is Spam
- Throttling
- Time
- Timely
- TINS
- TLD
- Tlp
- TLS
- TMIE
- Tmobile
- Too Much Mail
- Tool
- Tools
- Toomuchemail
- Tor
- Trademark
- Traffic Light Protocol
- Tragedy of the Commons
- Transactional
- Transition
- Transparency
- Traps
- Travel
- Trend/MAPS
- Trend Micro
- Trend/MAPS
- Trigger
- Triggered
- Troubleshooting
- Trustedsource
- TWSD
- Txt
- Types of Email
- Typo
- Uce
- UCEprotect
- Unblocking
- Uncategorized
- Undisclosed Recipients
- Unexpected Email
- Unicode
- Unroll.me
- Unsolicited
- Unsubcribe
- Unsubscribe
- Unsubscribed
- Unsubscribes
- Unsubscribing
- Unsubscription
- Unwanted
- URIBL
- Url
- Url Shorteners
- Usenet
- User Education
- Utf8
- Valentine's Day
- Validation
- Validity
- Value
- Valueclick
- Verification
- Verizon
- Verizon Media
- VERP
- Verticalresponse
- Vetting
- Via
- Video
- Violence
- Virginia
- Virtumundo
- Virus
- Viruses
- Vmc
- Vocabulary
- Vodafone
- Volume
- Vzbv
- Wanted Mail
- Warmup
- Weasel
- Webinar
- Webmail
- Weekend Effect
- Welcome Emails
- White Space
- Whitelisting
- Whois
- Wiki
- Wildcard
- Wireless
- Wiretapping
- Wisewednesday
- Women of Email
- Woof
- Woot
- Wow
- Wtf
- Wttw in the Wild
- Xbl
- Xfinity
- Xkcd
- Yahoo
- Yahoogle
- Yogurt
- Zoidberg
- Zombie
- Zombies
- Zoominfo
- Zurb