If your emails are going to spam, something specific is wrong. Here are the 12 most common reasons, in order of likelihood, with a concrete fix for each.
1. Missing or broken SPF. Fix: publish a valid SPF record listing all your sending sources.
2. Missing DKIM. Fix: configure DKIM signing in your ESP and publish the public key.
3. No DMARC record. Fix: publish a DMARC record, even if starting with p=none.
4. Sending IP on a blocklist. Fix: check with GlockApps or MXToolbox, fix the cause, request delisting.
5. Low sender reputation. Fix: clean your list, reduce complaints, warm up gradually.
6. Sending to spam traps. Fix: remove old, unengaged addresses. Never buy lists.
Find out which of these 12 issues is hitting you — run a free GlockApps test.
Run free test7. Spam trigger words. Fix: avoid "free!!!" "act now" "click here" in subject lines; test with a spam checker.
8. Image-heavy email with little text. Fix: maintain a healthy text-to-image ratio.
9. Broken or suspicious links. Fix: avoid URL shorteners, check all links resolve correctly.
10. High bounce rate. Fix: validate email addresses before sending; clean bounces after every campaign.
11. High complaint rate. Fix: make unsubscribing easy, send only to opted-in contacts, respect frequency expectations.
12. No warmup on a new domain/IP. Fix: warm up gradually over 2–4 weeks before sending at volume.
Run a free deliverability test with GlockApps and check your inbox placement across Gmail, Outlook and Yahoo, plus spam score and blocklist status.
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