Mailjet uses Customer.io for marketing email and Mailjet for transactional/notifications. They rank #11,387 in the Tranco list of most-popular domains. We've also observed sends via Mailgun. Email goes out from 2 different subdomains. Their email authentication setup is solid (score 95/100).
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.
SPF / DKIM / DMARC above reflect the last 2 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to dmarcian. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: all 14 observed emails use a return-path aligned with mailjet.com (a756041.bnc3.mailjet.com, a564413.bnc3.mailjet.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 11 observed emails sign with a domain aligned with mailjet.com (learn.mailjet.com, mailjet.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: 0% TLS 1.3, 100% TLS 1.2 (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).
Mailgun 2ESPs 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: mailjet.com, a564413.bnc3.mailjet.com, a756041.bnc3.mailjet.com, learn.mailjet.com, p9.mailjet.com, p11.mailjet.com, p38.mailjet.com, p27.mailjet.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 | 10 | 62.5% |
| promotions | 6 | 37.5% |
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 % |
|---|---|---|---|---|---|
| Customer.io | 4 | 25.0% | 75.0% | 0.0% | |
| Mailjet | 8 | 75.0% | 25.0% | 0.0% | |
| Mailgun | 2 | 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 mailjet.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 87.253.236.36 | o36.p11.mailjet.com |
5 | 2 | Check → |
| 87.253.234.145 | o145.p9.mailjet.com |
5 | — | Check → |
| 198.244.56.32 | c32.c5341538.usw1.send.mailgun.net |
2 | — | Check → |
| 185.189.238.202 | o202.p27.mailjet.com |
2 | — | Check → |
| 87.253.234.133 | o133.p9.mailjet.com |
1 | — | Check → |
| 87.253.234.158 | o158.p9.mailjet.com |
1 | — | Check → |
| 185.250.237.94 | o94.p38.mailjet.com |
1 | — | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
learn.mailjet.com | Customer.io 6 Mailjet 4 | |
mailjet.com | Mailjet 6 Mailgun 2 |