Paste your subject and body below. InboxIQ predicts Gmail and Outlook inbox placement and gives you actionable fixes — sourced from Google Postmaster, Outlook EOP, and SpamAssassin research.
How InboxIQ Works
InboxIQ scores your email across six areas that determine where it lands. Each check is calibrated for your campaign type.
Authentication
Checks whether your sending setup (SPF, DKIM, DMARC) meets the requirements Gmail and Outlook now enforce. Without full authentication, emails are increasingly rejected outright.
Subject Line Risk
Scans for spam trigger words, excessive caps, emoji overuse, and misleading patterns. Subject lines are the first thing filters evaluate before opening the message.
Body Content Risk
Analyzes your message for spam vocabulary density, invisible characters, and formatting red flags that trigger content-based filters at Gmail and Outlook.
Links & Formatting
Evaluates link count, URL shorteners, domain mismatches, HTML complexity, and image-to-text ratio. Too many links or suspicious formatting shifts emails toward Promotions or Spam.
Engagement Signals
Looks for personalization, conversational tone, clear calls-to-action, and message structure that encourage replies. Replies are the strongest positive signal for inbox placement.
Campaign Type
Adjusts all scoring based on whether you're sending cold outreach, nurture follow-ups, or promotional campaigns. Each type has different filter expectations and thresholds.
Possible Outcomes
Gmail Primary Inbox
Gmail Promotions Tab
Outlook Inbox
Junk / Spam / Quarantine
Gmail Promotions is still inbox placement. Your email is delivered and visible to the recipient. For promotional campaigns, Promotions tab is the expected and normal outcome.
Bulk and promotional email should include a visible unsubscribe link. Gmail requires one-click unsubscribe for senders over 5,000 emails/day. A clear opt-out improves trust, reduces complaints, and is required by CAN-SPAM.
Actual placement depends on more than content. Sender reputation, domain age, IP warmup, recipient engagement history, and mailbox-provider behavior all influence where your email lands. InboxIQ evaluates what you can control — the message itself.