6sense uses Marketo for marketing email and Amazon SES for transactional/notifications. They rank #14,385 in the Tranco list of most-popular domains. Their email authentication setup is good (score 70/100). Missing: one-click unsubscribe.
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 vali.email. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: all 11 observed emails use a return-path aligned with 6sense.com (ses.6sense.com, know.6sense.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 10 observed emails sign with a domain aligned with 6sense.com (6sense.com). DKIM authenticates the visible From — supports DMARC directly.
Delivery (last 7 days): 50% under 10 seconds, 0% over 1 minute (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: 6sense.com, ses.6sense.com, know.6sense.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 | 11 | 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 | 10 | 100.0% | 0.0% | 0.0% | |
| Marketo | 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 6sense.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 54.240.9.36 | a9-36.smtp-out.amazonses.com |
4 | — | Check → |
| 54.240.9.54 | a9-54.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.9.31 | a9-31.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.9.33 | a9-33.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.9.92 | a9-92.smtp-out.amazonses.com |
1 | 1 | Check → |
| 54.240.9.112 | a9-112.smtp-out.amazonses.com |
1 | 1 | Check → |
| 199.15.213.50 | potomac1050.mktomail.com |
1 | 1 | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
6sense.com | Amazon SES 10 Marketo 1 |