How HubSpot’s AI Email Writer Can Boost Email Deliverability

AI tools have made it easier than ever to draft emails in seconds. But here’s the big question: will those emails actually land in the inbox - or end up in spam? 

HubSpot’s AI Email Writer is a powerful addition for marketers and sales teams, giving you quick drafts, subject lines, and tone adjustments. But good writing alone isn’t enough. 

The difference between success and failure in email marketing often comes down to deliverability. 

The smartest approach is to combine HubSpot’s AI writing power with deliverability intelligence for the best results. 

What is HubSpot’s AI Email Writer?

HubSpot’s AI Email Writer (part of Marketing Hub and AI Assistants) is designed for marketing and sales teams who want to speed up campaign creation and need fast, on-brand outreach. Instead of staring at a blank page, you get a first draft ready to refine. 

It helps you:

• Generate subject lines in different tones
• Draft Email body copy in minutes
• Rewrite or shorten content for clarity
• Personalise templates quickly for sales outreach

Why Content Quality Matters for Deliverability

Content plays a significant role in Email Deliverability. It is not just about technical setup (SPF,  DKIM, DMARC). 

ISPs and Spam filters also evaluate:

• Language: Phrases like “FREE”,  “BUY NOW!”, or any urgency-driven call to action can trigger these filters. Avoid spam words or overuse of claims. 

• Formatting:  Too many images, excessive links, ALL CAPS, or exclamation marks are red flags. 
• Engagement and list quality: Emails to inactive subscribers or lists with low open/click rates damage reputation and future inbox placement. 

AI-generated content can fall into pitfalls, such as flashy but spammy phrasing, repetitive CTAs, or bland tones that fail to engage, all of which risk being placed in the inbox. It is essential to use human thinking to correct this, as originality matters if you want to avoid being caught in spam filters. 

HubSpot and Email Deliverability

HubSpot holds strong infrastructure and email authentication:

• Guidance in setting up SPF, DKIM, and DMARC
• Bounce and spam compliance handling
• Dedicated deliverability support and email health dashboards
• Infrastructure to prevent large-scale issues

Content-level spam testing, such as seed box testing, spam filter scoring, or explicit suggestions for copy tweaks, is still not included in HubSpot. 

That means while you are technically compliant, your words could still get filtered out, and you might not know till it's too late. 

How to Connect AI Writing with Deliverability Testing

Here’s an innovative Workflow combining HubSpot AI with Email Deliverability Validation:

• Draft Copies using HubSpot’s AI Email Writer
• Run Deliverability checks via tools like Optimail for spam filter scores, seed inbox tests, and reputation diagnostics.

• Review feedback by checking for flagged words and low inbox placement

• Refine your draft with AI by adjusting tone, simplifying CTAs, etc..

• Retest and deploy with confidence.

Practical Tips to Boost Inbox Placement with AI-Written Emails

Even with AI + Testing, smart writing habits still matter:

• Avoid spammy language and urgency-heavy phrases
• Balance text and images. Don’t rely on image-only emails
• Limit external links; ensure link text matches actual URL
• Personalise using CRM tokens - relevance drives engagement and deliverability

The Future of AI + Deliverability

We’re headed toward an era where AI doesn’t just write, it preemptively ensures deliverability by:

• Highlighting spammy language as you write
• Predicting Primary vs. Promotions tab placement
• Checking the domain/IP reputation in real time

Soon, AI will be less the copywriter and more the deliverability coach.

HubSpot’s AI Email Writer speeds up email creation, and HubSpot’s platform shields your technical foundation. However, to truly win inbox placement, you must combine great writing with expertise in deliverability. 

AI helps you write. Deliverability intelligence ensures your message lands. Together, they guarantee your message is seen. 

Get in touch with our HubSpot Driven Email Deliverability Experts to learn how HubSpot’s AI Email Writer can help you boost Email Deliverability.