Format of messages to be sent

Personalization: Mailings can include the recipient's first and last name.

Format: Messages are sent in HTML with a text version automatically generated from the HTML code. For design assistance, please contact your account manager.

Compatibility: Since the recipient's email client (Gmail, Outlook, Yahoo, Hotmail, iOS/Android Mail, etc.) cannot be predicted, designs must ensure reasonable rendering across all platforms. It is impossible for the design to appear exactly identical in every client.

Basic rules

Message content

  • Be concise and get straight to the point.
  • Craft a compelling and relevant subject line.
  • Ensure relevance and proper targeting; prioritize text over design.

Message design

  • Layout Foundation: Use HTML tables for layout structure (avoid <div> elements).
  • Es recomendable usar CSS incrustado (<style>…</style>); evite <link rel="stylesheet">.
  • Image Blocking: Assume images are blocked by many clients; the core message must be clear using text alone.
  • Critical Content: Do not use images for critical elements like headings or links. Always provide equivalent alternative text if images are used.
  • Image Attributes: All images must include width, height, and descriptive alt attributes. Test the design with images disabled.
  • Animated GIFs: Many email clients only display the first frame; ensure it is self-explanatory. When in doubt, avoid animations entirely.
  • Typography: Use common web-safe fonts (Arial, Helvetica, Times, Courier, Verdana, etc.). Most clients will not download external fonts.
  • Do not use JavaScript, it does not work in e-mail aplications.
  • Avoid using forms, as most email clients will block them.
  • Testing: Thoroughly test across multiple email clients (Outlook, Windows Mail, macOS Mail, iOS Mail, Android Mail, Hotmail, Gmail, Yahoo, Thunderbird, Lotus Notes, etc.). Services like Litmus or Email on Acid are recommended.

File Sizes, Attachments & Links

  • HTML Size: Must not exceed 150 KB
  • Attachments: Not permitted. Provide links to downloadable files (e.g., PDFs) hosted on your website or ours.
  • Content Strategy: An email should not contain all information—include links for interested recipients to learn more.

Automated Additions to Your Message

Interempresas will add (in order to comply with current Law):

  • To comply with legal requirements, Interempresas will automatically append a footer stating that the recipient registered at www.interempresas.net and include an unsubscribe link for commercial communications.

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