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Why My Emails Go to Spam
Identify and fix common deliverability problems.
Sending emails that land in the inbox is harder than ever. OffURL can check your SPF, DKIM, DMARC, and other authentication records to see if they're correctly set up.
150+
Security checks
16
Categories covered
30s
Scan duration
100%
Detection coverage
Key Findings
1. Authentication – The Non‑Negotiable Foundation
Without SPF, DKIM, and DMARC, your emails are essentially anonymous – and major providers (Gmail, Outlook, Yahoo) treat them as suspicious by default. SPF (Sender Policy Framework) lets you list which servers are allowed to send email for your domain. DKIM (DomainKeys Identified Mail) adds a digital signature that proves the email hasn't been tampered with. DMARC (Domain‑based Message Authentication) tells receivers what to do when SPF or DKIM fail.
2. The Fix: A Step‑by‑Step Plan
Start by using OffURL to check your existing DNS records. It will tell you if SPF, DKIM, DMARC are present and correctly formatted. If any are missing, we provide the exact TXT records to add. Next, verify that your sending IP is not blacklisted. Then, clean your email list – remove inactive subscribers to improve engagement.
The Problem
Emails go to spam for several reasons
- Missing or incorrect SPF record
- No DKIM signature
- DMARC policy not set or too permissive
- High complaint rates
- IP reputation issues
- Email content triggering spam filters
OffURL Solution
OffURL performs a thorough email security audit
- Checks SPF, DKIM, DMARC, BIMI, MTA‑STS, TLS‑RPT
- Identifies missing or misconfigured records
- Provides clear fix steps for each record
- Rates your email security posture
Key Features
SPF/DKIM/DMARC check
Verify your domain's authentication records are correctly published.
Pass/fail status
Clear indication of which records are valid and which need attention.
Fix examples
Get sample TXT records for SPF, DKIM, and DMARC for your domain provider.
Email threat analysis
Assess if your domain is vulnerable to spoofing or phishing attacks.
I set up SPF and DKIM, but emails still go to spam. Why?
Check your DMARC policy. If you have no DMARC record or a policy of "none", email receivers might still treat your messages as suspicious. OffURL will show you exactly what's missing and provide the correct DNS record to add.
Frequently Asked Questions
What is OffURL and how does it work?
OffURL is a comprehensive website security and performance audit tool. It scans your site for 150+ checks including SSL, security headers, malware, XSS, SQL injection, email security, and more.
Is the security audit really free?
Yes. Your first security report is completely free and includes premium features like detailed findings, fix steps, and the full 150+ checks.
How can I use AI to fix security issues?
Download the premium PDF report and paste it into your preferred LLM (Claude, ChatGPT, Gemini, Cursor) with a prompt asking for specific fixes for your framework.
How long does the security audit take?
Most audits complete in 10‑30 seconds. The scan includes DNS lookups, SSL analysis, HTTP requests, port scanning, and vulnerability tests.
Do I need to create an account?
No. OffURL works without registration. Your first audit is free with premium features included.
What vulnerabilities can OffURL detect?
OffURL detects XSS, SQL Injection, NoSQL Injection, LDAP Injection, XXE, SSRF, SSTI, Code Injection, Command Injection, Open Redirect, Path Traversal, LFI, RFI, CRLF Injection, Parameter Pollution, and CORS Misconfiguration.