Gmail's AI overhaul is not a minor update. Google is rebuilding the inbox from the ground up.
With the rollout of Gmail powered by Google Gemini, emails are now interpreted, summarised, and sometimes skipped entirely before a human makes a single decision. For email marketers, that changes where attention is earned and lost.
Here is what is changing, and what to do about it.
What's actually changing?
1. AI Overviews: Your email, summarised whether you like it or not
Gmail now generates AI summaries of emails, pulling out key points so users can skim without opening fully.
What this means:
- Your carefully crafted intro may get skipped.
- Your CTA buried at the bottom may never be seen.
- Your full message may be reduced to a few AI-selected lines.
If your core message is not clear from the first sentence, it may not be seen at all.
2. Smarter Suggested Replies: fewer clicks, less engagement
AI-generated replies are becoming more context-aware and more usable. Think:
- "Sounds good, thanks!"
- "Let's proceed."
- "Not interested right now."
Users can respond without reading deeply. Replies get shorter and faster. Long-form persuasion now competes with a one-click response.
The bigger shift: AI becomes the gatekeeper
This is the real issue.
Your email is no longer competing only with other emails. It is competing with AI summaries, AI filters, and AI prioritisation. You are now marketing to an algorithm before you reach a human.
What email marketers need to do now
1. Front-load value
If your key message is not in the first one or two lines, you are taking a risk.
- Lead with the outcome.
- Make the value obvious immediately.
- Treat preview text as prime real estate.
2. Write for skimming and summarisation
Your emails need to survive both human scanning and AI summarising.
- Use clear, structured formatting.
- Cut filler sentences.
- Make key points easy to extract at a glance.
3. Make CTAs impossible to miss
If an AI summary skips your CTA, your conversion rate takes the hit.
- Introduce your CTA early.
- Repeat it naturally through the email.
- Keep the language simple and action-focused.
4. Optimise for intent, not just opens
Open rates have been unreliable for a while. They are now close to meaningless. Focus on clicks, conversions, and revenue per email. AI will reshape how emails are consumed, but outcomes still matter.
5. Double down on relevance
AI prioritisation favours relevance signals. Generic emails with no personalisation and no match to user intent are more likely to be deprioritised or poorly summarised.
Spray-and-pray email is finished.
6. Subject lines matter more than ever
Your subject line now influences opens, AI prioritisation, and whether your email gets summarised or buried. Aim for:
- Clear over clever.
- Specific over vague.
- Benefit-driven over curiosity-only.
The opportunity
Most brands will get this wrong. They will keep writing long, padded emails, ignore structure, and bury the message three scrolls down. That is your gap.
If you communicate clearly, respect attention spans, and deliver value in the first few lines, you will outperform competitors, not despite the AI changes, but because you adapted to them.
Where email goes from here
Email marketing is not dying. It is being filtered more aggressively. The brands that perform will not be the ones sending more email or writing longer copy. They will be the ones whose messages are understood quickly, by both the algorithm and the person on the other side of it.
Frequently asked questions
- Will Gmail's AI summaries affect my email open rates?
- Yes, though open rates were already unreliable after Apple's Mail Privacy Protection changes. Gmail's Gemini AI can surface key information from an email without a full open, so clicks, conversions, and revenue per email are now better indicators of performance.
- How should I restructure my emails to work with Gmail's AI overviews?
- Put your main message and CTA in the first one or two lines. Use clear formatting, cut filler, and make key points easy to extract. If the value of your email is not obvious immediately, the AI summary may miss it entirely.
- Do Gmail's AI changes affect all email senders or just bulk marketers?
- The changes affect any email that lands in a Gmail inbox, including transactional emails, newsletters, and sales outreach. Bulk senders with low relevance and poor personalisation are likely to be hit hardest by AI deprioritisation.
- Should I write shorter emails now that Gmail summarises content?
- Not necessarily shorter, but better structured. Front-load your value, place CTAs early and repeat them, and remove padding. A well-structured longer email will perform better than a short one that buries the point.