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ESP Deliverability Report

Updated Apr 1, 2026

Amazon SES

Amazon's cloud-based email sending service

Deliverability Grade

B

Good email deliverability practices

19%

Primary Inbox

63%

Promotions Tab

16.2%

Avg Spam Rate

Transactional ESP

Platform Type

Shared IPs

Available

Dedicated IPs

Available

IP Warmup Required

Yes

Price Range

Budget-friendly

Dedicated IP Min Volume

Any volume (available as add-on)

Authentication & DMARC Alignment

SPF Auto-Configured

No

DKIM Auto-Configured

Yes

Custom Sending Domain

Yes

DMARC Alignment Notes

Amazon SES uses DKIM signing via your verified domain, passing DMARC alignment when you configure domain verification. SPF alignment requires configuring a custom MAIL FROM domain — not enabled by default.

Deliverability Features

  • Virtual Deliverability Manager
  • Reputation dashboard
  • Dedicated IP auto-warmup
  • Email size and rate controls
  • Bounce and complaint feedback loops
  • Extremely low cost per email

Shared IP Reputation

SES shared pools are large and varied. Quality depends on which pool you land in. New accounts start in a sandboxed state requiring production access approval — Amazon's review process filters low-quality senders early.

Best For

High-volume transactional emailCost-sensitive operations (lowest $/email)Developer teams with AWS infrastructureSending from AWS-hosted applications

Inbox Placement Breakdown

Primary Inbox19%
Promotions Tab63%
Spam Folder18%

Benchmarks based on InboxEagle seed list testing data across ecommerce and SaaS senders. Individual results vary based on list quality, engagement, and domain reputation.

Key Takeaways for Amazon SES Senders

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Amazon SES scores a Grade B with a 16.2% average spam rate and 19% Primary inbox placement.

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Configuring a custom sending domain is straightforward — do this before scaling sends.

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Dedicated IPs are available from Any volume (available as add-on). Below this threshold, shared pools offer more established reputation.

See Your Actual Amazon SES Inbox Placement

Benchmarks show averages. InboxEagle shows you exactly where your Amazon SES emails land — Gmail Primary vs. Promotions vs. Spam — across Gmail, Yahoo, AOL and Outlook after every send.

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Free Checklist

The exact checklist used by 2,000+ email senders to diagnose and fix inbox placement issues — free.

  • Authentication setup (SPF, DKIM, DMARC)
  • Sender reputation signals to monitor
  • List hygiene benchmarks
  • Content & engagement red flags

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