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Jackandjill

jackandjill.ai
🏆Rank #237,971 🏷 Education

Jackandjill uses SendGrid as their primary email service provider. They rank #237,971 in the Tranco list of most-popular domains. We've also observed sends via Postmark. Their email authentication setup is good (score 73/100). Missing: DMARC enforcement, one-click unsubscribe.

Transactional ESPSendGrid
Total observations9
Active days4
Avg per active day2.3
Last activity📬 Active · yesterday
Cadence~weekly
Compare Jackandjill with another brand:

Email setup 73/100

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.
73/100
SPF
pass
DKIM
pass
DMARC
pass (none)
BIMI
none
Unsubscribe
missing
SPF lookups 7/10

SPF / DKIM / DMARC above reflect the last 8 emails we've observed. DMARC policy is read live from DNS.

Authentication

DMARC reports sent to cloudflare.net. Policy p=none is monitor-only — receivers won't act on spoofing yet.

SPF alignment: all 9 observed emails use a return-path aligned with jackandjill.ai (clkmail.jackandjill.ai, pm-bounces.jackandjill.ai). SPF authenticates the visible From — supports DMARC directly.

DKIM alignment: all 9 observed emails sign with a domain aligned with jackandjill.ai (jackandjill.ai). DKIM authenticates the visible From — supports DMARC directly.

Transport & deliverability

TLS: modern — 100% TLS 1.3 (across 9 sends).

Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 6 sends).

Other ESPs detected

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

Postmark 3

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.

Postmark ✓ confirmed SendGrid ✓ 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 Google Workspace HubSpot

Probed: jackandjill.ai, clkmail.jackandjill.ai, pm-bounces.jackandjill.ai

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
inbox 9 100.0%

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 %
Postmark 3
100.0% 0.0% 0.0%
SendGrid 6
100.0% 0.0% 0.0%

ESP activity over time

Jun 14 – Jun 30, 2026 · 4 days with sends

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

4 0 SendGrid: 1 (2026-06-14)1SendGrid: 1 (2026-06-23)Postmark: 1 (2026-06-23)2SendGrid: 2 (2026-06-24)2SendGrid: 2 (2026-06-30)Postmark: 2 (2026-06-30)406/1406/1606/1806/2006/2206/2406/2606/2806/30
SendGrid Postmark

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Sending IPs

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

IPHostnameObsPlacementReputation
159.183.181.46 o6.ptr6413.clerk.dev 3 2 Check →
159.183.147.115 o5.ptr1737.clerk.dev 3 3 Check →
104.245.209.212 mta212a-ord.mtasv.net 1 1 Check →
104.245.209.196 mta196a-ord.mtasv.net 1 1 Check →
104.245.209.197 mta197a-ord.mtasv.net 1 1 Check →

Sending domains

DomainESPs detectedDelivery (7d)
jackandjill.aiSendGrid 6 Postmark 3