1
    converting-email-templates

    converting-email-templates

    by Daryna Ivanova

    Migrate legacy email templates from SendGrid, Mailgun, and others to Mailtrap-compatible Handlebars syntax.

    Updated Jun 2026
    0 installs

    Free

    Included in download

    • Downloadable skill package
    • 1 permission declared
    • Instant install

    Sample input

    I need to migrate 15 SendGrid templates from the /old-emails folder to Mailtrap. Convert them and save the results in a new /mailtrap-templates directory.

    Sample output

    Bulk migration complete: 15 files processed.

    • Clean: 12
    • Needs review: 3 (Flagged: dynamic comparison logic)

    Output: /mailtrap-templates Summary: Converted {{user.first_name}} and {{#if}} blocks. Reminder: Update your SendGrid 'dynamic_template_data' to Mailtrap 'template_variables'.

    About This Skill

    Automates conversion of email HTML templates from six major ESPs to Mailtrap-compatible Handlebars syntax. Runs a bundled Python converter script for deterministic pattern replacements, then applies LLM judgment for complex edge cases. Handles single files, bulk directory conversion, or inline HTML pasted in chat. Generates a detailed report of changes made and flags any patterns that require app-layer code changes. Includes API field mapping reminders so the sending integration is updated alongside the template.

    Use Cases

    • Bulk migrate legacy email templates to Mailtrap with zero syntax errors.
    • Convert inline HTML snippets from Mandrill merge tags to Handlebars.
    • Identify application-side logic changes needed for template compatibility.
    • Standardize multiple provider templates into a single Mailtrap-friendly format.

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    Security Scanned

    Passed automated security review

    Permissions

    Terminal / Shell

    File Scopes

    scripts/**
    references/**

    Tags

    email-marketing
    handlebars
    migration-tool
    mailtrap
    html-templates
    devops

    Compatible with SKILL.md-compatible agents including Claude Code and Aider.

    Creator

    Daryna Ivanova

    Frequently Asked Questions

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