Let’s talk about something big that just dropped.
Google has officially rolled out Gemini, its new AI-powered assistant, and it’s starting to shape what shows up (or doesn’t) in your customers’ inboxes.
But here’s the part ecommerce brands really need to know:
Gemini is already influencing how Gmail filters and ranks marketing emails. That means your next campaign could land in the promotions tab… or disappear into spam… without you changing a thing.
If your business relies on email to drive retention, revenue, or post-purchase loyalty (spoiler: it should), this update matters.
In this post, we’ll break down:
- What the Gmail Gemini update actually means
- How to keep your emails visible and converting
- What NOT to do if you care about deliverability
- How In Flow Marketing clients are staying ahead of the game
What Is Gmail’s Gemini Update? (And Why It Matters for Ecomm)
Gemini is Google’s most advanced AI system to date. It’s being used to enhance search, chat, and, yes, inbox sorting.
Instead of basic filters, Gmail now uses Gemini to contextually assess the value of every email. It doesn’t just look at subject lines or code anymore. It evaluates who it’s from, how people engage with it, and whether it’s useful to the recipient.
If you’re sending ecommerce emails that aren’t:
- Relevant
- Timely
- Wanted by the subscriber
…you’re now more likely to get deprioritised, even if your copy is clean and your list is legit.
This is Google’s way of protecting user experience and that means email marketers need to step it up.
5 Ways to Stay in the Inbox in 2026
Let’s skip the jargon and focus on what actually works. Here’s what we’re recommending to every ecommerce client right now:
1. Send from a Branded Domain
This is non-negotiable.
A branded sending domain (vs the default Klaviyo domain) builds trust with Gmail, proves authenticity, and avoids unnecessary spam flags.
All In Flow Marketing clients already have this covered.
Click here to learn more about Branded Sending Domains.
2. Stop Blasting Your Whole List
Mass campaigns to everyone might feel productive, but they’re hurting your deliverability.
Gmail (and Gemini) want to see engagement. That means:
- Segmented sends
- Behaviour-based flows
- Personalisation that actually feels personal
Start small, go deeper, get better results.
3. Use Consent-First List Growth (and Ditch the Giveaways)
Gemini is trained to spot dodgy data.
That means:
- Purchased lists
- Giveaway participants who didn’t really opt in
- Contacts from other brands you “collabed” with…
…are a fast-track to spam or promo folders.
Instead, use first-party, intent-rich list growth strategies, like Klaviyo’s new Instagram Auto-Replies feature. It captures email/SMS directly from DMs with full consent and direct sync.
4. Write Like a Human, Not a Hype Machine
AI doesn’t just read your HTML. It reads tone.
If your emails scream “SALE! FINAL HOURS! DON’T MISS OUT!!!” without actual relevance, you’re more likely to get filtered.
Best practice:
- Match message to context (don’t send “just because it’s Tuesday”)
- Use plain text or lightly styled emails where appropriate
- Segment by behaviour (e.g. clicked last 30 days, purchased >$100)
5. Track Deliverability Metrics, Not Just Open Rates
Open rates are changing. Again.
Gmail and Apple Mail privacy updates mean opens aren’t always reliable. But:
- Inbox placement
- Click-through rate
- Spam complaints
- Bounce rate
…still give you the real picture.
If you’re unsure how your account stacks up, we’re offering Klaviyo Mini Audits to help you check your deliverability health before it costs you sales.
What to Avoid in 2026 (If You Care About Deliverability)
Let’s be clear: the bar is getting higher, even for small brands.
These are the habits that will get you filtered by Gemini:
🚫 Sending to cold or unengaged lists
🚫 Ignoring bounced emails and complaint rates
🚫 Using sketchy list growth tactics (giveaways, list swaps, purchased data)
🚫 Relying entirely on campaigns instead of building out automated flows
🚫 Ignoring replies or engagement signals
If this feels overwhelming, it doesn’t have to be. These are things we help clients clean up and build smart systems around, without burning their audience out.
How In Flow Clients Are Already Staying Ahead
Here’s how we’re setting clients up for long-term success under Gemini (and whatever else rolls out next):
- Branded sending domains
- Consent-first list growth (like this new IG integration)
- High-converting flows built on purchase and behaviour data
- Segmentation strategies that balance volume with engagement
- Human-first content with expert-level structure behind it
The result? Higher inbox placement, better conversion, and less reliance on hacks or workarounds.
Final Word: This Isn’t a Panic Moment, It’s a Shift in Standards
If your ecommerce brand is already focused on value, relevance, and retention, you’re in a great position.
But if you’re still doing the bare minimum with list growth, segmentation, or deliverability?
Now’s the time to fix it.
Gemini is the first of many AI layers that will shape how email works moving forward—and the brands who treat the inbox with intention will be the ones who keep driving sales through it.
Ready for Expert Eyes on Your Account?
We’re offering Klaviyo Mini Audits to help brands assess their setup, deliverability, and long-term email health before Gemini buries your next campaign.
Book yours here or just reach out at jess@inflowmarketing.co and let’s chat about what’s working, what’s not, and what to do next.
P.S.
In plain English? Gmail is getting smarter and it’s now using AI (called Gemini) to decide which emails deserve to land in your customer’s inbox.
That means:
- If your emails feel irrelevant, salesy, or bulk-blasted → they’re more likely to get filtered out
- If your list is full of unengaged or random subscribers → your whole account could suffer
- And if you’re not using things like branded domains, good segmentation, or consent-based list growth → now’s the time
The good news?
If you focus on sending useful, well-timed, human emails to people who actually want to hear from you, you’re ahead of the curve.
Want help making sure your Klaviyo account is set up for this?
Book a Mini Audit and I’ll show you what’s working, what’s risky, and how to improve it.