What This Update Actually Is
HubSpot shipped a visual refresh to the marketing email editor. This is not a new feature set. It's a redesigned layout that gives the email canvas more screen real estate.
Here's exactly what changed:
- Collapsed sidebar: the left panel shrinks to a slim icon strip, so your email preview fills the full width of the screen
- Persistent tab bar: A/B testing and Preview and test are always visible at the top, no more hunting through menus
- Cleaner header: Save and Review and send are prominently placed in a simplified top bar
- Bottom-corner device toggles: desktop and mobile preview plus undo and redo sit in the canvas corner, accessible without leaving your work
Your existing emails, templates, and workflows are completely unaffected. This is a visual change only.
Why HubSpot Shipped This
The old editor was genuinely crowded. Sidebar, header, toolbar, and settings panels all competed for limited screen space at the same time.
For humans who design emails every day, that meant spending more time navigating the interface than actually building. The design friction was subtle but real: you'd lose context switching between panels, miss mobile rendering issues because the preview was cramped, or click through multiple menus just to run a quick A/B test.
HubSpot's fix is smart. Instead of adding more features, they removed visual noise. The result is a canvas-first editor that keeps common actions one click away without cluttering the workspace.
How to Use It Step by Step
There's genuinely nothing to configure here. But knowing where everything moved saves you time the first time you open it.
- Open any marketing email in HubSpot. You'll see the updated editor automatically. No toggle, no opt-in.
- Find your content tools in the icon strip on the left. Click any icon to expand the panel you need. Click it again to collapse it.
- Run A/B tests or preview your email using the persistent tab bar at the top. Both options are always visible, no menu navigation required.
- Check mobile rendering using the device toggle in the bottom-right corner. Switch between desktop and mobile view without leaving your canvas.
- Save or send from the simplified header at the top. Save and Review and send are both right there.
- Use undo and redo from the bottom corner if you need to roll back a change while staying in the canvas.
What It Touches in Your HubSpot Strategy
Because this is a layout change and not a functional one, your existing templates, automated email workflows, and reporting setups are all intact. But the refresh does ripple into a few practical areas worth naming.
A/B testing is now faster to reach. That matters. Humans who skipped A/B tests because the setup felt buried now have one less excuse. If your team hasn't been running consistent split tests on subject lines or CTAs, this is a good moment to build that habit.
Key Takeaway
The persistent A/B testing tab removes the most common reason teams skip split tests: friction. If your email strategy doesn't include regular A/B testing, the new layout makes it much easier to start.
Mobile preview is also more accessible now. The bottom-corner toggle means you can check rendering on every single email without breaking your design flow. Given that over half of marketing emails are opened on mobile, this is worth using on every send.
If your team trains new humans on the email editor, update your SOPs and screenshots. The visual layout is different enough that old documentation will create confusion.
If you're already rethinking your email approach for 2026, this editor refresh pairs well with the tactical guidance in our article on B2B email marketing quick wins that still work when AI reads your inbox first. The cleaner canvas makes it easier to execute on those strategies without interface friction slowing you down.
And if you're seeing deliverability issues, no editor redesign fixes a broken list. Our breakdown of why your B2B email list is hurting inbox placement is worth a read alongside any email workflow review.
Key Takeaway
Update your team's training documentation before the next onboarding cycle. The new layout is better, but screenshots from the old editor will create confusion for anyone learning the tool for the first time.
Who Should Care Most
This update affects every Marketing Hub user regardless of tier. But the humans who feel the most immediate benefit are:
- Email marketers and marketing ops professionals who live in the editor daily and felt the old panel layout was cramped
- Small teams on Starter where one person handles design, copy, and QA: the single-click device preview reduces the chance of sending a broken mobile experience
- Marketing managers on Professional and Enterprise who want their teams running A/B tests consistently: surfacing that tab removes the barrier
- HubSpot admins onboarding new team members: the cleaner layout is genuinely easier to learn, but your training assets need to be refreshed
If your company sends fewer than a handful of emails a month, the impact is minor. If email is a primary channel, you'll notice the breathing room quickly.
George's Take
I've reviewed a lot of HubSpot portals over the years, and one of the most consistent friction points I see is humans spending more time managing the tool than doing the actual work. The old email editor was a real example of that. Not broken, just noisy. This refresh is the kind of update that doesn't generate headlines but quietly improves your team's daily experience. The fact that A/B testing is now one click away is the detail I'd push every team to act on. Most teams I talk to know they should be testing more, but the setup friction was always a reason to skip it. That excuse is gone now.
“The best tool updates aren't the ones that add the most features. They're the ones that remove the friction stopping your team from using what's already there.”
If your team is still getting settled into Marketing Hub and the editor redesign is one more thing to absorb, we've written about why Marketing Hub onboarding often stalls around day 45 and how to prevent it. It's worth a read before your next training session.
If you want a second set of eyes on how your team is actually using the email editor, or on your broader Marketing Hub setup, we're here for that. Book a strategy call with the Sidekick team and we'll look at what's working, what's costing you time, and what to fix first.
Frequently Asked Questions
Does the HubSpot email editor redesign affect my existing email templates?
No. The redesign is a visual layout change only. Your existing emails, templates, and automated workflows are completely unaffected. The update changes where tools and panels are positioned on screen, not how any email functionality works.
Do I need to do anything to get the new HubSpot email editor layout?
Nothing. The update is automatic. The next time you open a marketing email in HubSpot, you'll see the new layout. There are no settings to toggle, no opt-in required, and no new workflows to learn.
Which HubSpot tiers get the new email editor look?
All of them. The redesigned email editor is available on Marketing Hub Free, Starter, Professional, and Enterprise. Tier doesn't affect whether you see the new layout.
Where did A/B testing go in the new HubSpot email editor?
It didn't go anywhere. It got easier to find. A/B testing now lives in a persistent tab bar at the top of the editor, always visible with one click. You no longer need to navigate through menus to start a split test.
How do I preview my email on mobile in the new editor?
Use the device toggle in the bottom-right corner of the canvas. Desktop and mobile preview options sit there alongside undo and redo. You can switch views without leaving your email or navigating to a separate preview screen.
Should I update my team's HubSpot training materials after this redesign?
Yes, and soon. The layout is different enough that screenshots or recordings from the old editor will cause confusion for anyone learning the tool. Update SOPs, Loom walkthroughs, and onboarding docs before your next new hire or team training session.
