You've used ChatGPT to draft an email. The response is well-structured with headings, bullet points, and maybe a comparison table. You copy it, paste it into Gmail or Outlook, and hit send.
What your recipient sees: a wall of text peppered with hash marks, asterisks, and pipe characters. Not the professional email you intended.
Why email formatting is especially tricky
Email is actually one of the hardest formatting challenges because:
- Email clients are inconsistent. Gmail, Outlook Desktop, Outlook Web, Apple Mail, and iCloud Mail all render HTML differently.
- CSS support is limited. Many email clients strip stylesheets and only respect inline styles.
- Markdown is invisible to email. No email client can interpret markdown syntax.
- Copy-paste from ChatGPT either brings unwanted styling (gray background) or raw markdown symbols.
What happens when you paste directly
From ChatGPT's web interface (Ctrl+C)
The browser copies HTML with ChatGPT's UI styling. You might get a gray background, inconsistent fonts, and partial formatting. Headings and tables are usually lost.
From ChatGPT's copy button
You get raw markdown. The email shows ##, **, |, and backtick characters as plain text. Completely unreadable for most recipients.
Using "Paste without formatting"
Everything becomes plain text. No bold, no lists, no structure. Just a wall of text.
The solution: convert for email first
Unmarkdown™ converts markdown to email-compatible HTML with inline styles that work across all major email clients.
- Copy the ChatGPT response
- Paste into unmarkdown.com/for-email
- Click "Email"
- Paste into your email compose window
The result is a properly formatted email with real headings, bold text, tables, code blocks, and clean typography.
What works across email clients
After conversion with Unmarkdown™:
| Feature | Gmail | Outlook Desktop | iCloud Mail |
|---|---|---|---|
| Headings (H1 to H3) | Works | Works | Works |
| Bold and italic | Works | Works | Works |
| Strikethrough | Works | Works | Works |
| Tables with borders | Works | Works | Works |
| Code blocks | Works | Works | Works |
| Blockquotes | Works | Works | Works |
| Lists (nested) | Works | Works | Works |
| Links | Works | Works | Works |
Unmarkdown™ uses inline styles and web-safe fonts specifically for email compatibility. No external stylesheets, no CSS classes, just inline styles that every email client understands.
Professional email tips with AI content
Don't paste the entire AI response
ChatGPT often generates more content than you need for an email. Edit down to the essential points before pasting.
Adjust the tone
AI output can be formal or verbose. After pasting the formatted version, read through and adjust the language to match your relationship with the recipient.
Check the table rendering
If your AI response includes a large table, preview the email before sending. Very wide tables (6+ columns) may not render well on mobile email clients.
Use headings sparingly
In an email, one or two heading levels is usually sufficient. If the AI response has three or more heading levels, consider simplifying the structure for email.
Blockquotes in email
Email is one of the best destinations for blockquotes. Unlike Word and OneNote, which struggle with the blockquote element, email clients render them with a proper left border, padding, and subtle styling.
If your AI response includes quoted text, the formatting transfers cleanly to email.
Common use cases
- Meeting summaries: Structured headings and action items from AI, sent to attendees
- Project updates: Tables comparing status across workstreams
- Research sharing: Formatted analysis with code examples and data tables
- Client communication: Professional formatting without spending time in a word processor
Other destinations
If your content needs to go somewhere other than email:
- Google Docs for collaborative documents
- Word for formal reports with heading styles
- Slack for team messaging (converted to mrkdwn)
- OneNote for personal notes with full heading support
All destinations are available from the same Unmarkdown™ interface.
Related reading
- Markdown in Gmail: Why It Doesn't Work and How to Fix It
- Obsidian to Email: Send Formatted Notes Without Breaking Layout
- How to Make ChatGPT Output Look Professional in Any App
- 5 Things That Break When You Paste AI Output (And How to Fix Each One)
- Markdown to Email: How to Send Beautifully Formatted Emails
