Amazon uses Amazon SES

Amazon uses Amazon SES as their primary email service provider. They rank #506 in the Tranco list of most-popular domains. Their email authentication setup is good (score 80/100). Missing: SPF, one-click unsubscribe.

Transactional ESP

Amazon SES

Total observations5

Active days4

Avg per active day1.3

Last activity📬 Active · 7 days ago

Cadence~weekly

Compare Amazon with another brand:

Email setup 80/100

Authentication signals observed in this brand's emails. SPF, DKIM and DMARC are the standard sender-authentication stack — see the DMARC policy below for whether spoofing is actually blocked or just monitored. One-click unsubscribe meets Google & Yahoo's bulk-sender requirements.

✓

Solid setup, room to improve

Most authentication signals are present. A couple of pieces would tighten things up.

80/100

SPF

fail

DKIM

pass

DMARC

pass (quarantine)

BIMI

verified VMC

Unsubscribe

missing

SPF lookups 7/10

SPF / DKIM / DMARC above reflect the last 4 emails we've observed. DMARC policy is read live from DNS.

Authentication

DMARC reports sent to amazon.com. Policy p=quarantine means receivers actively block or quarantine spoofed mail.

SPF alignment: all 5 observed emails use a return-path aligned with amazon.co.jp (bounces.amazon.co.jp). SPF authenticates the visible From — supports DMARC directly.

DKIM alignment: all 5 observed emails sign with a domain aligned with amazon.co.jp (amazon.co.jp). DKIM authenticates the visible From — supports DMARC directly.

Transport & deliverability

Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 3 sends).

Other ESPs detected

Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).

None — only the primary ESP(s) shown above

Confirmed senders

ESPs we've seen sending email for this brand. Green = confirmed by SPF, sender IP rDNS, or known infra pairing (label shows the source). Grey = observed but not yet confirmed by SPF or PTR.

Amazon SES ✓ confirmed

Other SPF authorizations

No additional ESPs authorized in the brand's SPF beyond the confirmed senders above.

Probed: amazon.co.jp, bounces.amazon.co.jp

Where emails landed (Gmail)

Folder distribution across all emails from this brand observed in Gmail inboxes. High inbox % = good deliverability; spam appearances are the headline signal.

Folder	Count	Share
inbox	5	100.0%

Placement by ESP

Which ESP's emails are landing where. Sorted by spam % so problem senders surface first. Brands using one ESP for marketing and another for transactional often see very different placement profiles per ESP. Per-ESP folder data only started being captured recently — counts here may be smaller than the total above until backfill catches up.

ESP	Emails	Placement	Inbox %	Tabs %	Spam %
Amazon SES	5		100.0%	0.0%	0.0%

ESP activity over time

Jun 8 – Jun 23, 2026 · 4 days with sends

Last 30d Last 90d

By ESP By inbox/spam

Daily observations per ESP. Brands often run multiple ESPs concurrently — marketing on one, transactional on another — so this chart shows usage rather than switches.

Amazon SES

Similar brands using Amazon SES

Sending IPs

IP addresses amazon.co.jp has been observed sending from, and where their mail landed in Gmail.

IP	Hostname	Obs	Reputation
182.22.18.28	`omggw0005.mail.otm.yahoo.co.jp`	1	Check →
54.240.25.33	`a25-33.smtp-out.us-west-2.amazonses.com`	1	Check →

Per-IP inbox / promotions / spam is being collected and will appear here as new emails are observed.

Sending domains

Domain	ESPs detected	Delivery (7d)
`amazon.co.jp`	Amazon SES 5