Are Your Email Campaigns Doomed to Spam Folders? New Guide!

Email marketing isn’t just about hitting send—it’s about making sure your message actually lands where it matters: the inbox. But that’s easier said than done. From Google’s new bulk sender requirements to AI-powered spam filters, deliverability has become the number one headache for B2B marketers. 

Even if you have the perfect subject line, a beautifully designed email, and an incredible offer, none of it matters if your email gets blocked. Our new ebook, 2025: The Truth About Email Deliverability, breaks down everything B2B marketers need to know about hitting the inbox—but first, let’s look at the biggies. Here are the top five roadblocks keeping your emails from getting seen!

The Big 5 Email Killers—And How to Fix Them

1. Confusion Between Delivery and Deliverability

What's one of the biggest misconceptions in email marketing? Thinking a high delivery rate means great deliverability. The truth? Not quite.

Delivery rate just tells you whether the receiving server accepted your email—it doesn’t tell you whether that email landed in the inbox or got buried in spam. But many marketers still misunderstand this distinction, leading to blind spots in their strategy.

🛠️ THE FIX: Focus on inbox placement, not just delivery rates. Use inbox placement testing and monitor engagement metrics like opens, clicks, and conversions to truly measure success.

2. New Bulk Sender Rules from Google & Yahoo

Google and Yahoo rolled out strict new rules for bulk senders in 2024, and many businesses weren’t ready. If you’re sending 5,000+ emails per day, you must:

✅ Authenticate your emails using SPF, DKIM, and DMARC
✅ Make it easy to unsubscribe with a one-click opt-out option
✅ Keep spam complaints under 0.1% to avoid deliverability issues

🛠️ THE FIX: If you haven’t already, get DMARC set up ASAP. And don’t wait—Google and Yahoo are already hinting that even stricter enforcement is coming.

3. Ignoring Spam Complaints

Spam complaints are a silent killer for deliverability. If more than 0.1% of recipients report your emails as spam, inbox providers will start diverting your messages away from primary inboxes—and into the abyss of spam filters.

Despite this, many marketers still don’t monitor spam complaints.

🛠️ THE FIX: Regularly check Google Postmaster Tools and your ESP’s spam reports. If complaints spike, it’s time to clean your list.

4. Shady List-Building Tactics

Buying email lists, scraping contacts from the web, or adding people who never opted in? Bad move. It’s one of the fastest ways to tank your sender reputation—and if you're a HubSpot user, it's an excellent way to end up in "email jail" where your marketing email is suspended!

🛠️ THE FIX: If your engagement rates are low or your bounce rates are high, it’s time for a list purge. Use a double opt-in process, and implement regular list hygiene to remove inactive contacts.

5. A Weak DMARC Policy

Yes, DMARC adoption has improved, but most senders are still using the weakest setting: p=none. That’s basically saying, “Hey mailbox provider, we have authentication, but don’t actually do anything with it.”

Google and Yahoo are already signaling that a stricter p=reject policy will soon be mandatory. If you wait until enforcement is required, you’re setting yourself up for future deliverability headaches.

🛠️ THE FIX: Move beyond p=none. Start testing p=quarantine or p=reject before Google forces your hand.

Want to Take the Guesswork Out of Deliverability?

You can’t afford to play a guessing game with email deliverability. If you’re not actively testing, monitoring, and optimizing, you’re losing potential customers before they even see your message.

Our new ebook can help! Get your copy of 2025: The Truth About Email Deliverability and dive into:

• What Google actually wants from senders RIGHT NOW
• How AI-powered algorithms are reshaping email deliverability
• How to avoid spam filters and get your emails into inboxes
• The key metrics that matter (hint: it’s not just open rates)

If you want higher inbox placement, lower spam complaints, and better engagement, this guide is for you.