beginner / July 2026

Email Deliverability Basics Quiz

Inbox placement depends on signals that build or weaken sender trust. Check authentication, spam rates, one-click unsubscribe, reputation, bounces, and list quality before the next campaign.

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Questions
10
Time limit
5 min
Scoring
First signed-in attempt counts
Edition
July 2026

What this quiz checks

Protect inbox placement before a campaign sends

AuthenticationSpam rateUnsubscribeBouncesList quality
  • Authentication and sender trustMailbox providers use authentication and sending patterns to judge whether messages are trustworthy.
  • Unsubscribe and complaintsDeliverability depends on whether recipients want the mail. Easy unsubscribe paths can reduce spam complaints.
  • Bounces and list qualityBounces and inactive recipients are signs to review list quality. Healthy lists are built from people who asked to receive the messages.

Study first

Review the ideas behind the questions

These notes explain how authentication, reputation, unsubscribes, bounces, and list quality affect inbox placement.

Authentication and sender trust

Mailbox providers use authentication and sending patterns to judge whether messages are trustworthy.

  • Gmail requires all senders to set up SPF or DKIM.
  • Bulk senders need SPF, DKIM, and DMARC.
  • Authenticated messages are less likely to be rejected or marked as spam.
  • Sending from a consistent identity helps recipients recognize messages.

Unsubscribe and complaints

Deliverability depends on whether recipients want the mail. Easy unsubscribe paths can reduce spam complaints.

  • Bulk promotional messages to Gmail need one-click unsubscribe.
  • Marketing messages should also include a clearly visible unsubscribe link.
  • High spam rates can hurt inbox delivery.
  • Gmail recommends keeping spam rates below 0.10% and avoiding 0.30% or higher.

Bounces and list quality

Bounces and inactive recipients are signs to review list quality. Healthy lists are built from people who asked to receive the messages.

  • A hard bounce usually means a permanent delivery problem.
  • A soft bounce usually means a temporary delivery problem.
  • Purchased email addresses can create deliverability risk.
  • Monitoring Postmaster Tools can help find sender reputation issues.

Question quality

Reviewed before publishing

Reviewed by
Aniruddh Sharma
Last checked
August 22, 2026

Based on Gmail sender guidelines, Gmail sender FAQ, and Mailchimp deliverability documentation, with questions focused on beginner deliverability checks.

The source pages for this edition were checked as part of the same review. Official product docs are linked where available.

Reviewer profileHow questions are checked

Sources

Sources used for this quiz

These pages support the quiz content and study notes.

Keep going

See all email marketing quizzesPractice more email marketing topics as they are added.Try the email marketing basics quizReview campaign and list basics before focusing on deliverability.Read our question quality processSee how quiz content is checked before publishing.