Email Glossary

Inbox Placement

Inbox placement measures where delivered emails end up in the recipient's mailbox: primary inbox, promotions tab, updates, or spam folder. Unlike delivery rate (which only measures acceptance by the receiving server), inbox placement tracks actual folder assignment. An email can be 'delivered' but still land in spam.

Factors Affecting Inbox Placement

  • ●Sender reputation - IP and domain reputation are the strongest signals
  • ●Authentication - SPF, DKIM, and DMARC alignment
  • ●Content quality - Spam trigger words, image-to-text ratio, link quality
  • ●Engagement signals - Recipients' past interactions with your emails
  • ●List quality - Bounce rates, spam complaints, spam trap hits
  • ●Sending consistency - Sudden volume spikes can trigger filters

Related Terms

Email Deliverability

The ability of your emails to reach recipients' inboxes instead of spam.

Sender Reputation

A score ISPs assign to your sending IP and domain based on email behavior.

Domain Reputation

The trustworthiness score mailbox providers assign to your sending domain based on historical sending behavior.

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