Guides5 min read
My SPF Record Has Too Many DNS Lookups: How Do I Fix It?
Past ten DNS lookups, SPF returns permerror and every message fails the check. Count the tree, prune dead senders, then flatten only what is left.
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Guides articles on email deliverability, authentication, and sender reputation.
Guides5 min read
Should Marketing and Transactional Email Use Different Subdomains?
Same root domain, different jobs. When splitting mail onto subdomains protects receipts and password resets, and when one zone is enough.
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Why Does My Email Fail SPF? Reading the Record Receivers Check
SPF is a DNS list of servers allowed to send mail for your domain. It does not encrypt mail or stop spoofing alone, but receivers check it first.
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The CNIL Email Tracking Pixel Rule: What Changes on July 14, 2026
France now treats email tracking pixels like cookies. From July 14, 2026, senders need prior consent to track opens and clicks. Here is how to comply.
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