Blog
Email Deliverability Guides & Best Practices
Guides, best practices, and intelligence from the InboxEagle team to help you land in the inbox every time.
E-commerce30 min
9 Best Email Deliverability Tools, Tested for Ecommerce (2026)
We tested email deliverability tools hands-on across placement testing, monitoring, warmup, and authentication, then ranked them for ecommerce senders on Klaviyo, Mailchimp, and SFMC. Here's what actually works, including where our own tool falls short.
Analytics9 min
What Does Email Deliverability Intelligence From 1.3M Inbox Sends Mean For Your Business
What is email deliverability intelligence? I analyzed 1.3M+ sends to show why SPF/DKIM/DMARC passes don't guarantee ecommerce inbox placement.
E-commerce9 min
The Pre-Q4 Email Deliverability Audit: What to Fix Before October
A five-area audit framework for email agencies preparing Klaviyo eCommerce clients for BFCM. Authentication, reputation, list hygiene, inbox placement, and infrastructure — what to check, what bad looks like, and what to fix before it is too late.
E-commerce27 min
eCommerce Email Deliverability: The Complete Guide for Klaviyo Brands (2026)
Everything Klaviyo eCommerce brands need to know about inbox placement, sender reputation, authentication, list hygiene, and seasonal deliverability. InboxEagle data: 1 in 6 marketing emails never reaches the primary inbox.
Klaviyo9 min
How to Win Email Marketing Clients with Deliverability Data
Most email agencies pitch services. The ones winning new clients are pitching problems the prospect didn't know they had. Here's how to use deliverability data to open doors, build trust, and close deals before a competitor even gets on the call.
E-commerce7 min
Amazon Prime Day Effect: How Competing Sales in July Damage Sender Reputation
Amazon Prime Day triggers an industry-wide email volume spike every July. Brands that run counter-programming sales without preparing their sending program pay for it in August, and sometimes all the way through Q4. Here is what happens and how to avoid it.
E-commerce10 min
Back-to-School Email Deliverability: The August Preparation Checklist
Back-to-school is the third-largest US eCommerce sending period of the year. Most brands start preparing the creative in June and ignore deliverability until August, which is exactly the wrong order. Here is what to audit, fix, and confirm before the sends start.
E-commerce7 min
5 Signs Your Email Program Has a Deliverability Problem (Not a Creative Problem)
Falling open rates and flat campaign revenue are easy to blame on subject lines and creative. But if the underlying problem is deliverability, no amount of copy testing will fix it. Here are the five signs that tell you where the problem actually is.
Klaviyo9 min
Agency Email Deliverability Checklist: What to Review Every Month
A structured monthly review process for agencies managing email deliverability across multiple eCommerce clients. Covers authentication, inbox placement, list health, complaint rate, and the signals most agency teams miss until it is too late.
E-commerce6 min
Email Validation vs. Email Verification: What's the Difference?
Email validation and email verification are not the same thing, and using the wrong one at the wrong moment costs you deliverability. Here's what each actually does, when to use each, and why eCommerce senders need both.
E-commerce7 min
What Top eCommerce Brands Do Differently with Email Deliverability
The brands with consistently high inbox placement rates are not using different tools. They are making different decisions about infrastructure, list quality, and how they measure success. Here is what separates them.
E-commerce7 min
How to Monitor Competitor Email Strategies
You can see exactly what your competitors are sending, when they send it, and how their infrastructure is set up, without any special access. Here is how eCommerce brands use publicly available signals to benchmark against their category.