Buzzsprout uses Kit for marketing email and Amazon SES for transactional/notifications. They rank #3,564 in the Tranco list of most-popular domains. Their email authentication setup is solid (score 95/100).
Amazon SESAuthentication 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.
SPF / DKIM / DMARC above reflect the last 3 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to Postmark DMARC. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: all 12 observed emails use a return-path aligned with buzzsprout.com (amazonses.buzzsprout.com, ckespa.buzzsprout.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 11 observed emails sign with a domain aligned with buzzsprout.com (buzzsprout.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 100% TLS 1.3 (across 7 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 2 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
None — only the primary ESP(s) shown aboveESPs 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.
ESPs this brand has authorized in their SPF record. We confirm them with a green ✓ only after seeing recurring use (3+ emails across 2+ days). Until then they stay here — either we haven't observed any email yet, or we've seen a handful but not enough to call them a regular sender for the brand.
Probed: buzzsprout.com, ckespa.buzzsprout.com, amazonses.buzzsprout.com
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 | 13 | 100.0% |
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 | 11 | 100.0% | 0.0% | 0.0% | |
| Kit | 1 | 100.0% | 0.0% | 0.0% |
Daily observations per ESP. Brands often run multiple ESPs concurrently — marketing on one, transactional on another — so this chart shows usage rather than switches.
IP addresses buzzsprout.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 54.240.11.117 | a11-117.smtp-out.amazonses.com |
2 | 1 | Check → |
| 54.240.11.102 | a11-102.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.48.3 | a48-3.smtp-out.amazonses.com |
1 | — | Check → |
| 167.89.29.250 | o12.ck.m.convertkit.com |
1 | — | Check → |
| 54.240.48.1 | a48-1.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.11.128 | a11-128.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.48.77 | a48-77.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.48.21 | a48-21.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.11.118 | a11-118.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.11.116 | a11-116.smtp-out.amazonses.com |
1 | 1 | Check → |
| 54.240.11.110 | a11-110.smtp-out.amazonses.com |
1 | 1 | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
buzzsprout.com | Amazon SES 12 Kit 1 |