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If you’re a hemp, CBD, or cannabis brand struggling with email deliverability, domain authentication is likely the issue—not your industry keywords. This post explains why SPF, DKIM, and DMARC matter more than ever, how to check them using Gmail’s “Show Original,” and how to fix them on GoDaddy, Namecheap, or Squarespace. It also covers what to do if your domain is “burned” and how to test inbox placement using GlockApps. Clean setup and consistent testing are key to keeping your emails out of spam.
April 11, 2025
In short, using those keywords alone won’t land your emails in spam. But being in a high-risk industry means inbox providers look at you more closely. And that makes getting the technical foundations right non-negotiable.
Over the past year, inbox providers like Google (Gmail), Microsoft (Outlook/Hotmail), and Yahoo have made domain authentication a priority. They’ve become stricter about enforcing SPF, DKIM, and DMARC.
What does that mean?
If these aren’t properly set up, your emails are far more likely to get flagged, sent to spam, or rejected outright—especially for brands in regulated industries.
Think something might be wrong? Here’s a quick way to find out:
If you see any of the above…your domain authentication is broken. These issues are a leading cause of poor inbox placement.
If you’re using Klaviyo, you may also see a notice like “Sender Requirements: Needs Attention.”
Here’s Klaviyo’s guide on authentication.
SPF (Sender Policy Framework): Verifies that the mail server sending your emails is authorized. No SPF = no trust.
DKIM (DomainKeys Identified Mail): Adds a digital signature to your messages. This proves the message wasn’t tampered with and came from you.
DMARC (Domain-based Message Authentication, Reporting & Conformance): Tells inboxes what to do if an email fails SPF or DKIM. It also gives you visibility into attempts to spoof your domain.
If you’re in hemp or cannabis, these records are even more critical. Your messages face higher scrutiny. Fail these checks, and you’re likely going to spam.
If you manage your domain, here’s how to add the right records. Assume you’re using Klaviyo for sending.
GoDaddy
SPF:
Create or edit a TXT record for @ with:
v=spf1 include:klaviyo.com include:_spf.google.com ~all
DKIM:
In Klaviyo, find your DKIM key (e.g., k1._domainkey). Add it as a TXT record in GoDaddy.
DMARC:
Add a TXT record for _dmarc with:
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s
Namecheap
Log into Namecheap, go to Domain List > Manage > Advanced DNS
Add or update:
Squarespace
Even with the right DNS setup, emails can still land in spam. Why?
You may have a burned domain—a domain with a bad reputation from past spam complaints or blacklists.
Signs your domain is burned:
What to Do
GlockApps helps confirm your emails land where they should. We use it regularly with clients to test inbox placement.
Steps:
GlockApps gives real-world data you can act on. It’s especially helpful when you’re testing a new domain or troubleshooting low open rates.
To stay in the inbox:
By addressing SPF, DKIM, and DMARC properly, you remove a huge chunk of the friction that puts emails in spam. But it’s not enough to just fix the technical records—you also need to confirm that those changes are doing their job. Tools like GlockApps help you do exactly that by showing you where your emails end up in real inboxes, across multiple providers. We use GlockApps with our clients all the time to spot hidden deliverability pitfalls, verify improvements in real time, and fine-tune campaigns for maximum inbox placement.
Whether you’re brand new or a seasoned pro, fine-tuning your authentication, monitoring your sender reputation, and using comprehensive testing tools is the surest way to ensure your hemp, CBD, or cannabis emails find their rightful place in your subscribers’ inboxes. From there, all that’s left is to keep delivering valuable, engaging content that your audience will love—without worrying about the dreaded spam folder ever again!
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