Text Email
• Older than WWW
• SMTP 1982
• Lots of use in Japan
• Japan feature phone ecosystem
• Still very popular today
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HTML Email
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HTML Email
• Lots of table
• Lots of inline style, no shorthand
• Lots of Microsoft stuff
• -ms/mso prefixed style
• mso conditional comment
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Problems of
HTML Email
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Lots of Mail Client
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Mail Clients
• Gmail on web
• Gmail on Android
• Gmail on iOS
• Outlook
• Apple Mail
• Apple Mail on iOS
• Thunderbird
• Lotus Note
• Blackberry
• …
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3 Major Type
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Desktop Standalone
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Web Based
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Mobile Native App
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Desktop Mobile Web
buggy CSS support
need table layout
need responsive layout
best CSS support
not allow
need sandbox
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Buggy?
• No tag in web mail client
• No <style>, no media query
• No float layout
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Buggy?
• No JavaScript support
• No support in almost every client
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Desktop
Mobile Web
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Desktop
Mobile Web
牦
অ
OK
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Desktop
Mobile Web
牦
অ
OK
OK অ牦
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Problems
• Lots of environment
• Uncommon behavior
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More Problems
• Lots of environment
• Uncommon behavior
• No debugging tool
• No document
• No standard
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Why no Standards
• Mail client didn’t complete follow entire
web standards
• For security reason
• For application size
• Use customized engine or webview
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When Microsoft releases a new version of
Outlook that’s STILL powered by Word.
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<script>
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on mail.google.com ?
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Size in MB
82 74
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Size in MB
40 20
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Standardize It?
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Email Standard Project
• by Campaign Monitor founder
• No actually update since 2011
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Process To Develop
HTML Mail
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modify html/css
send test mail
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The first time you ever tested your email
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Coding Mobile First Email
• Basic layout, 3 level of
• Media query and display: table; for
desktop standalone
• Special hack for outlook.com
• Conditional Comment for outlook
• CSS Calc for web client responsive
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HTML email,
The Final Frontier of F2E
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લਓߥՌ
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Documents
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Document
• No standards
• But we have lot of document wrote by
pioneers
• Nettuts+
• Campaign Monitor
• Litmus
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Nettuts+
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MailChimp
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Campaign Monitor
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Will It Work
• CSS Support
• Email Design Guidelines
• Email Client Stats
• Video in Email
• Best Widths
• Image Blocking
• Using Forms in Email
• Alt Attributes
• Flash in Email
• Symbols in Subject Lines
• Web Fonts
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Conferences
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The Email Design Conference
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Email Innovations Summit
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Tools
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Premailer
• Preflight for HTML email
• Convert to inline style
• Relative to absolute URL
• Check CSS compatibility
• Create plain text version
• Open Source Project
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Litmus
• The most powerful mail preview service
• Mail test/checker
• Mail analysis
• Paid service
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Email Market Share
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MJML
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MJML
• Mailjet Markup Language
• by Mailjet
• A new markup language for HTML email
What is MJML
• A new markup language
• Component with layout meaning
• Render to HTML with all necessary tags,
inline style, conditional comment
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Behind the Scene
• Based on React
• Easy to extend
• MJML app by Electron
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Advantages
• No need to understand mail client issues
• Easy to learn
• Easy to edit and preview with App
• Open source
• Extensible
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Disadvantages
• Hard to customize
• Component is not enough now
• Possible to extend or use raw HTML
• Some style will be remove
• ex: gradient background