🧪 Free Email Proofing & Testing AI Assistant: Custom GPT
Your first-pass QA analyst for email campaigns
Join my Slack community to hear how CRM & lifecycle marketers are using AI.
Broken links. Placeholder personalization. Formatting glitches. Missing alt text. Typos that somehow escape five rounds of reviews.
I’ve been there too—so I built a Custom GPT to help.
👉 Try the Email Proofing & Testing Assistant GPT here
Why I Built This
Lifecycle marketers are responsible for sending millions of emails—often with lean teams and short timelines. But QA is rarely prioritized in the MarTech stack.
We’re left manually checking every subject line, preview text, UTM, CTA, and fallback condition—every single time.
What if AI could do the first pass?
That’s exactly what this GPT does. It acts as your QA analyst, scanning your email copy and campaign brief against a proofing checklist—catching the most common (and costly) mistakes before you ever hit send.
What It Checks
You simply upload your email content and campaign brief, and it checks for:
✅ Broken or missing links
✅ Placeholder personalization tokens (
{{first_name}}, etc.)✅ Inconsistent tone, capitalization, or brand voice
✅ UTM parameters on all outbound links
✅ Subject line and preview text logic
✅ Alt text presence for images
✅ Required legal/disclaimer copy
✅ Test vs. live audience copy inconsistencies
✅ Email formatting issues (e.g., spacing, special characters)
And more.
It’s not here to replace a human—but it gives you a safety net and a head start.
🔍 How It Works
Upload your campaign doc — ideally in this format (includes sample EdTech brief)
Paste your email content — subject line, body, CTAs, links
(You can also use this sample email set to test it out with the campaign doc)Let the GPT scan and review against a checklist of common errors
Get a list of flagged issues, with reasons and suggestions
Fix, validate, and hit send with confidence
Under the Hood
The GPT is powered by a proofing checklist I’ve refined across years of campaign launches. It knows what to look for, what questions to ask, and when to flag something for human review.
Future versions of this GPT may integrate even deeper—checking for rendering, validating ESP specific language and more.
Built for Marketers, by a Marketer
This isn’t some generic QA tool—it was built for people like us. People who launch lifecycle campaigns at 6 PM, with 3 stakeholders still “reviewing,” and a growing list of last-minute edits.
If this sounds like you, I’d love your feedback. I’m still improving it every week.
👉 Try the Email Proofing GPT here
No logins. No setup. Just paste your email and let it QA.
PS: If you want to customize this for your brand’s tone, legal needs, or product naming conventions, let me know—I can help you fork a version that fits your QA needs perfectly.
Feedback to improve the proofing checklist?
If you feedback to improve the GPT, please let me know through Slack here.