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Iroboup uses Klaviyo as their primary email service provider. Their email authentication setup is good (score 80/100).

Marketing ESPKlaviyo
Total observations22
Active days4
Avg per active day5.5
Last activity💤 Dormant · 7 weeks ago
Cadence~monthly
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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
pass
DKIM
pass
DMARC
pass (quarantine)
BIMI
none
Unsubscribe
one-click
SPF lookups 3/10
Authentication

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

SPF alignment: all 16 observed emails use a return-path aligned with iroboup.com (k3.email.iroboup.com). SPF authenticates the visible From — supports DMARC directly.

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.

Klaviyo ✓ confirmed

Other SPF authorizations

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.

Amazon SES

Probed: iroboup.com, k3.email.iroboup.com

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.

FolderCountShare
promotions 12 100.0%

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 %
Klaviyo 6
0.0% 100.0% 0.0%

ESP activity over time

Feb 9 – May 11, 2026 · 11 weeks with sends

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

3 0 Klaviyo: 2 (week of 2026-02-09)2Klaviyo: 2 (week of 2026-02-16)2Klaviyo: 2 (week of 2026-03-16)2Klaviyo: 2 (week of 2026-03-23)2Klaviyo: 2 (week of 2026-03-30)2Klaviyo: 1 (week of 2026-04-06)1Klaviyo: 1 (week of 2026-04-13)1Klaviyo: 2 (week of 2026-04-20)2Klaviyo: 3 (week of 2026-04-27)3Klaviyo: 3 (week of 2026-05-04)3Klaviyo: 2 (week of 2026-05-11)2Feb 9Feb 23Mar 9Mar 23Apr 6Apr 20May 4
Klaviyo

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Sending IPs

IP addresses iroboup.com has been observed sending from, and where their mail landed in Gmail.

IPHostnameObsReputation
170.203.28.201 kl-203-28-201.kmta.shared.klaviyomail.com 5 Check →
170.203.20.55 kl-203-20-55.kmta.shared.klaviyomail.com 3 Check →
170.203.28.46 kl-203-28-46.kmta.shared.klaviyomail.com 2 Check →
170.203.20.3 kl-203-20-3.kmta.shared.klaviyomail.com 2 Check →
170.203.16.21 kl-203-16-21.kmta.shared.klaviyomail.com 2 Check →
170.203.23.144 kl-203-23-144.kmta.shared.klaviyomail.com 2 Check →
170.203.27.148 kl-203-27-148.kmta.shared.klaviyomail.com 1 Check →
170.203.24.46 kl-203-24-46.kmta.shared.klaviyomail.com 1 Check →
170.203.20.11 kl-203-20-11.kmta.shared.klaviyomail.com 1 Check →
170.203.24.3 kl-203-24-3.kmta.shared.klaviyomail.com 1 Check →
170.203.28.2 kl-203-28-2.kmta.shared.klaviyomail.com 1 Check →
170.203.20.5 kl-203-20-5.kmta.shared.klaviyomail.com 1 Check →

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

Sending domains

DomainESPs detectedDelivery (7d)
iroboup.comKlaviyo 22