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Why Did My Email Go to Spam? Deliverability Answers.

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  1. Respect the unsubscribe—or pay for it with spam complaints. Making it hard to unsubscribe doesn’t keep people on your list; it pushes them to hit “mark as spam.” One-click unsubscribe isn’t optional anymore, and it’s far less damaging to lose a subscriber than to rack up spam complaints. Relevant, personalized emails are your best defense against spam filters. The best way to insult an email marketer is to call their emails spam. No one wants their hard work to be lumped into malicious sending behavior!

    In Content-based spam filtering

  2. Domain reputation: How mailbox providers (MBPs) view your sending domain and IP addresses Content: What your message contains and how your subscriber has reacted to it in the past If you’re struggling to solve the latest deliverability mystery for your email marketing program, you’re not alone.

    In Content-based spam filtering

  3. Spam filters are there to catch scammers, not keep good senders from reaching the inbox. However, sometimes us healthy senders do get flagged and filtered into spam for a few different reasons. Three factors influence whether or not someone receives your email in the inbox: Infrastructure: Your identification and authentication records

    In Content-based spam filtering

  4. You see, every email you send goes through a maze of deliverability obstacles before it reaches its destination. Three factors influence whether or not someone receives your email in the inbox: Infrastructure: Your identification and authentication records Domain reputation: How mailbox providers (MBPs) view your sending domain and IP addresses

    In Content-based spam filtering

  5. Check this list first, then read on for how to fix them. Authentication protocols communicate to MBPs that the email coming in is from a legitimate sender. 8 steps to prevent emails from going to spam

    In Content-based spam filtering

  6. Check this list first, then read on for how to fix them. Most major MBPs require authentication protocols to be in place for bulk senders. 8 steps to prevent emails from going to spam

    In Content-based spam filtering

  7. Check this list first, then read on for how to fix them. Check DKIM, SPF, and DMARC records to ensure all are correctly set up. 8 steps to prevent emails from going to spam

    In Content-based spam filtering

  8. Land in inboxes, not spam folders See deliverability problems before they cost you with real-time placement testing, reputation monitoring, and authentication checks in your workflow. A non-exhaustive list of why your marketing emails are going to spam

    In Content-based spam filtering

  9. Spam filters aren’t just catching scammers—they’re catching you. With one in six real emails never making it to the inbox, you’ll need to pay attention to your infrastructure, sender reputation, and subscriber engagement. Making it hard to unsubscribe doesn’t keep people on your list; it pushes them to hit “mark as spam.” Relevant, personalized emails are your best defense against spam filters. Strong deliverability comes from sending emails people actually want to receive. That means smart segmentation, clean lists, and thoughtful personalization. Engagement is the ultimate inbox pass.

    In Content-based spam filtering

  10. Spam filters aren’t just catching scammers—they’re catching you. With one in six real emails never making it to the inbox, you’ll need to pay attention to your infrastructure, sender reputation, and subscriber engagement. One-click unsubscribe isn’t optional anymore Relevant, personalized emails are your best defense against spam filters. Strong deliverability comes from sending emails people actually want to receive. That means smart segmentation, clean lists, and thoughtful personalization. Engagement is the ultimate inbox pass.

    In Content-based spam filtering

  11. Key takeaways ✨ you’ll need to pay attention to your infrastructure, sender reputation, and subscriber engagement. Respect the unsubscribe—or pay for it with spam complaints. Making it hard to unsubscribe doesn’t keep people on your list; it pushes them to hit “mark as spam.” One-click unsubscribe isn’t optional anymore, and it’s far less damaging to lose a subscriber than to rack up spam complaints.

    In Content-based spam filtering