Agency Specialists vs Brand Generalists

This is why email work keeps splitting into specialists at agencies and generalists inside brands. Most companies do not staff someone who can handle the full stack of email, from hand coding complex layouts to fixing Outlook quirks to building reusable systems, so internal teams usually cover repeat sends while agencies or senior specialists step in for new templates, interactive builds, and cross brand design systems.

• Inside brands, email coding is usually a partial job, not a full role. Jay Oram describes CRM or marketing staff who can edit HTML and CSS and send campaigns, but still need outside help for a fresh template, interactivity, dark mode issues, or Gmail and Outlook rendering problems.
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• The tooling market reflects that split. Parcel found early pull from agencies and a smaller group of dedicated email developers, while broader brand teams wanted collaboration features so marketers could make copy changes without pulling the coder back into every small edit. Customer.io bought Parcel in 2022 to bring that workflow into the sending platform.
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• The most advanced setups turn one expert's work into a system others can use. At Sinch, one senior email developer built components in Parcel so a coworker with basic HTML skills could assemble simpler emails across brands and languages. That is the practical substitute for hiring many true end to end email coders.
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This pushes the market toward design systems, component libraries, and tighter editor to ESP integration. Instead of every company hiring a rare all around email coder, the winning setup is one specialist building the underlying system once, then marketers and coordinators reusing it for day to day sends with less risk and much higher speed.