When you send emails through various email service providers (ESPs) or routers like Mailgun, you might notice additional metadata embedded within the email headers. One such piece of metadata is the X-Feedback-ID. This header can be crucial for tracking, debugging, and ensuring optimal email deliverability. But why do…
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Email marketers are no strangers to complaints, but when they start noticing strange patterns in these complaints, it’s natural to become concerned. A friend recently asked about an unusual spike in email complaints within Iterable—specifically from Gmail users, who do not report complaints back to the ESP (Email…
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Seeing a Gmail alert that reads, “Be careful with this message. The sender hasn’t authenticated this message so Gmail can’t verify that it actually came from them,” can be puzzling—especially when you know for certain that your domain is properly authenticated. This alert can appear even for emails…
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Let’s first understand what Google Postmaster actually is. It is a free tool to monitor information about outgoing email that you send to personal Gmail accounts, and about the domains and IP addresses you use to send email. Google Postmaster Tools is a useful tool that helps people…
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Experiencing fluctuating click rates and “mailbox unavailable” soft bounces from major email providers like Outlook/Hotmail and Gmail can be frustrating, especially when your IP and domain reputation are high. Given the erratic performance you’ve described, it sounds like there’s a combination of factors at play, possibly involving engagement…
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Sending emails to a seed list separately from your main audience is a valuable strategy for monitoring deliverability, engagement, and overall email performance. However, there are important considerations to ensure that this practice doesn’t negatively impact your campaigns over time. Here’s a breakdown of how to effectively manage…
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In today’s globalized world, emails are sent to people who speak different languages. But what if your recipients could simply toggle to their preferred language, all within the same email? That’s where AMP email comes in. In this blog, we’ll walk you through the steps of using AMP…
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Have you ever wanted your email signature to look special and unique? Maybe you want it to match your personal style or company branding. Using a custom font can make your email signature stand out. However, there are a few important things to keep in mind to make…
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Have you ever noticed that emails sometimes look weird on your phone, especially on iOS devices? This happens because iOS Mail handles HTML and CSS (the stuff that styles your emails) differently from other email apps. But don’t worry! Here are some easy tricks to help you control…
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When it comes to email deliverability, one of the most critical elements to configure correctly is your DNS records, specifically the Sender Policy Framework (SPF). For businesses using email marketing platforms like Klaviyo, SPF is often managed through a CNAME record on a subdomain. However, this setup often…
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