E-commerce
September 30, 2026
Are you wondering how to understand the new Gmail and Yahoo deliverability requirements? These rules, announced for this year, aim to reduce unsolicited messages. For recipients, this is good news. For e-merchants, a crucial marketing channel may be threatened.
Deliverability is the ability of an email to reach the inbox. Without it, even the most beautiful campaigns remain invisible. The new requirements impose strict authentication and rigorous reputation management.
So, how do you understand the new Gmail and Yahoo deliverability requirements? On the agenda:
What is email deliverability and why is it crucial?
How to ensure the consistency of your sending domain?
Why configure SPF, DKIM, and DMARC?
How to improve your domain's reputation?
Which indicators should you track to evaluate your performance?
Let's get started.
Summary
What is email deliverability and why is it crucial?
Email deliverability measures a message's ability to reach the recipients' inbox. Good deliverability means your emails land in the primary inbox, even if subscribers don't open them. Poor deliverability sends them to Gmail's "Promotions" tab, to spam, or blocks them entirely.
Without deliverability, the quality of your content and offers does not matter. No one will see them. For an e-merchant, this is a vital issue: every undelivered email represents a potential lost sale.
The new requirements from Gmail and Yahoo are tightening controls. Understanding these mechanisms allows you to protect your email channel and maintain a direct link with your customers. By mastering these rules, you can not only avoid spam filters but also improve subscriber engagement. Good deliverability is the foundation of a successful loyalty strategy, as it ensures your messages arrive at the right time, in the right inbox. Investing time in this understanding is therefore a direct investment in the growth of your business.
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How to ensure the consistency of your sending domain?
The sender's domain appears in three places: in the "From" address, in the "Reply-To" address, and in the sending domain. Your email service provider (such as Mailchimp or Klaviyo) typically assigns a sending domain, which is an alias. The actual sender is the provider, not your business.
However, most providers allow you to use sending domains that match the "From" and "Reply-To" addresses. Make sure your domain is consistent across these three places. This consistency is a primary signal of trust for inboxes.
If your domain differs, your emails run the risk of being marked as suspicious. Check this configuration today to avoid deliverability issues. A consistent configuration also reinforces your brand recognition with recipients, which can increase open rates. Consider using a dedicated subdomain for your marketing mailings, such as "mail.yourbrand.com", to separate your transactional and promotional communications. This allows for better control over the reputation of each type of mailing and prevents issues on one from affecting the other.
Why configure SPF, DKIM, and DMARC?
Email providers need to know that you are not an impostor. Configuring SPF, DKIM, and DMARC records with your domain registrar is a basic deliverability test. Without these authentications, your emails are much more likely to be blocked.
SPF verifies that your domain is authorized to send emails. DKIM adds a digital signature that confirms the integrity of the message. DMARC tells receiving servers how to handle unauthenticated emails.
Most email service providers offer tools and guides to configure these settings. Do not neglect this step: it has become mandatory with the new requirements from Gmail and Yahoo. In addition to these protocols, remember to regularly check that your records are still valid, as a misconfiguration can lead to authentication failure. Use tools like MXToolbox to diagnose issues. Proper authentication is the first barrier against identity theft and a sign of trustworthiness for inboxes.
How to improve your domain reputation?
A domain that sends 10,000 emails immediately after registration does not inspire trust. Neither does a domain with a 50% spam complaint rate or invalid addresses. Conversely, an established domain with few complaints and consistent engagement has a good reputation.
Your domain reputation is essential for inbox delivery. To build it, follow these best practices:
Only send to subscribers: avoid buying address lists.
Send relevant content: offers tailored to your subscribers' expectations.
Clean your list: remove inactive subscribers and invalid addresses.
Use a cleaning service: tools like Neverbounce or AtData detect incorrect addresses.
Monitor your reputation with services like Google Postmaster Tools, which is free and reliable. In addition to these actions, adopt a gradual sending strategy: progressively increase your volumes so as not to raise suspicions. Segment your audience to send more targeted messages, which improves engagement and reduces complaints. A solid reputation is built over time, but it can be destroyed in an instant by an ill-prepared campaign.
What role does content play in deliverability?
Content is the most obvious component of deliverability. Sending emails on irrelevant topics, such as Lego offers to subscribers of a clothing store, irritates and deserves a bad reputation. Similarly, emails overloaded with images and exaggerations ("win big", "millions", "lottery", "gold") can be flagged as spam.
Emails from many e-commerce brands are clipped due to too many photos and links. Testing with tools like Glockapps shows that fewer images improve deliverability. HubSpot studies confirm this trend.
Use images in your campaigns, but in moderation. Prioritize text for a better deliverability rate. Balanced content, with clear text and relevant visuals, is more likely to be well received. Avoid spam trigger words and personalize your messages to strengthen the connection with your subscribers. Test different formats to find what works best with your audience, and use analytics tools to track the performance of each campaign.
What are the key performance indicators to track?
To assess the health of your mailings, monitor these metrics:
Open rate: the number of opens divided by the number of delivered emails. Aim for at least 20% for e-commerce campaigns.
Click-through rate: the number of clicks divided by the number of delivered emails, ignoring unsubscribe clicks. Aim for at least 1%.
Bounce rate: the number of returned emails divided by the total delivered. Keep it under 1%.
Unsubscribe rate: the number of unsubscribes divided by the number of delivered emails. Stay under 0.5%.
Spam rate: the number of complaints divided by the number of delivered emails. This is the most critical. If it exceeds 0.3%, your reputation suffers. Aim for 0.05% or less.
These KPIs give you a clear view of your deliverability. By monitoring them regularly, you can identify trends and react quickly to any issues. For example, a sudden spike in bounce rate can indicate a list issue, while a drop in open rate can signal less relevant content. Use this data to refine your strategy and continuously improve your performance.
How do the new Gmail and Yahoo requirements impact e-merchants?
Gmail and Yahoo are now imposing stricter requirements for senders. These include SPF, DKIM, and DMARC authentication, as well as the ability to unsubscribe in one click. These rules aim to reduce spam and protect users.
For e-commerce merchants, this means that unauthenticated emails or those with a poor reputation will be more easily blocked. Campaigns that do not comply with these rules risk never reaching their recipients.
It is therefore crucial to check your configuration and clean your list regularly. Merchants who adapt quickly will maintain an effective communication channel. Furthermore, these requirements encourage healthier practices, such as sending relevant content and proactively managing unsubscribes. This can ultimately improve the overall engagement of your audience, as only interested subscribers remain on your list. Take this opportunity to build customer trust and optimize your campaigns.
Which tools should be used to test and monitor deliverability?
Several tools allow you to test and monitor your deliverability. Google Postmaster Tools is free and provides data on your domain reputation, spam complaints, and authentication errors. It is an excellent starting point.
Glockapps is another popular tool for testing your email deliverability. It shows you how your messages are classified across different providers. These tools help you identify issues before they affect your campaigns.
Use them regularly to adjust your strategies and maintain a healthy sending status. In addition to these tools, consider using deliverability services like SendForensics or 250ok for deeper analysis. These platforms offer customized recommendations to improve your delivery rates. Integrate these checks into your monthly routine to stay proactive and avoid bad surprises during your important campaigns.
How to integrate deliverability into your retention strategy?
Deliverability is a pillar of customer loyalty. If your emails do not reach your customers, you cannot engage or retain them. Good deliverability ensures that your follow-up messages, special offers, and reward programs arrive at their destination.
To integrate deliverability into your strategy, start by segmenting your list. Send personalized and relevant content. Regularly clean your database to avoid invalid addresses.
Finally, monitor your KPIs and adjust your campaigns accordingly. Healthy deliverability builds trust and encourages repeat purchases. By combining good deliverability with tailored offers, you create a virtuous cycle: your customers receive relevant messages, engage more, and your sender reputation improves. This allows you to maintain a strong connection with your audience and maximize the long-term value of each customer.
What are the common errors to avoid for deliverability?
Several errors can harm your deliverability. Purchasing address lists is one of the worst practices: it increases complaints and bounces. Sending irrelevant or overly promotional content can also be flagged as spam.
Neglecting SPF, DKIM, and DMARC authentication is another common mistake. Without these records, your emails are more likely to be blocked. Finally, failing to clean your list of inactive subscribers can degrade your reputation.
Avoid these pitfalls to maintain good deliverability and protect your email channel. In addition to these errors, beware of sending too frequently, which can weary your subscribers, and misleading subject lines that increase complaints. Adopt a transparent and respectful approach to your subscribers: offer clear opt-out options and honor them promptly. Good list hygiene and ethical communication are the keys to sustainable deliverability.
How does Qstomy help improve deliverability and retention?
Qstomy, the Shopify AI agent, helps merchants improve deliverability by optimizing customer engagement. By recommending relevant products and offering cross-sells, Qstomy increases the relevance of your emails, which reduces complaints and improves your reputation.
Qstomy also tracks packages and manages returns, which reduces support requests and frustrations. A satisfied customer is less likely to mark your emails as spam. Additionally, Qstomy helps personalize communications, strengthening loyalty.
By integrating Qstomy, you improve the customer experience, which translates into better open and click-through rates, and therefore better deliverability. By automating these processes, you save time and can focus on creating more effective campaigns. Qstomy allows you to build a relationship of trust with your customers, essential for a successful retention strategy.
What checklist should you use to verify your compliance with the new requirements?
Before launching your next campaigns, check these points:
Authentication: Are SPF, DKIM, and DMARC configured?
Domain consistency: Do the "From" and "Reply-to" addresses match the sending domain?
List cleaning: Have you removed invalid addresses and inactive subscribers?
Content: Are your emails relevant and not overloaded with images?
KPIs: Are you tracking your open, click, bounce, unsubscribe, and spam rates?
In short: Deliverability is a major challenge for e-merchants. The new requirements from Gmail and Yahoo impose strict authentication and rigorous reputation management. By following these best practices, you will protect your email channel and build customer loyalty.
FAQ: Email deliverability explained
What is email deliverability? It is the ability of an email to reach the inbox. Good deliverability means your messages land in the main inbox.
Why are Gmail and Yahoo imposing new requirements? To reduce spam and protect users. They require SPF, DKIM, and DMARC authentication, and one-click unsubscription.
How can I improve my deliverability? Set up authentication, clean your list, send relevant content, and monitor your KPIs.
To go further: How to optimize an e-commerce site for Google (step-by-step guide) - Qstomy, How to handle customer questions on technical prerequisites before purchase - Qstomy, Why does an e-commerce business fail within the first 12 months? - Qstomy, Why use social media for e-commerce customer service? - Qstomy, Integrating customer service answers into an e-commerce SEO strategy useful to customers - Qstomy, E-commerce first response time: what impact on conversion and loyalty? - Qstomy, Fulfillment guide: how online stores deliver efficiently - Qstomy.
Enzo
September 30, 2026
