Rebrandly uses Customer.io for marketing email and Amazon SES for transactional/notifications. They rank #28,842 in the Tranco list of most-popular domains. Their email authentication setup is solid (score 90/100). We've recorded 1 ESP change since first observing this brand.
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 2 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to dmarc-report.com. Policy
p=quarantine means receivers actively block or quarantine spoofed mail.
SPF alignment: 98% of observed emails use an aligned return-path (cioeu141755.rebrandly.com, outbound.intercom.rebrandly.com, outbound-eu.intercom.rebrandly.com); the rest use third-party paths (amazonses.com) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 36 observed emails sign with a domain aligned with rebrandly.com (cioeu141755.rebrandly.com, rebrandly.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: 9% TLS 1.3, 91% TLS 1.2 (across 11 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).
Intercom 25ESPs 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: rebrandly.com, outbound.intercom.rebrandly.com, cioeu141755.rebrandly.com, outbound-eu.intercom.rebrandly.com, amazonses.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 | 54 | 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 | 1 | 100.0% | 0.0% | 0.0% | |
| Customer.io | 28 | 100.0% | 0.0% | 0.0% | |
| Intercom | 20 | 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 rebrandly.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 143.55.239.106 | v5106.v5a39be5d.euw1.send.eu.mailgun.net |
18 | 1 | Check → |
| 192.174.84.120 | mta-174-84-120.intercom.com.sparkpostmail.com |
12 | — | Check → |
| 192.174.84.119 | mta-174-84-119.intercom.com.sparkpostmail.com |
11 | — | Check → |
| 143.55.239.109 | v5109.v5a39be5d.euw1.send.eu.mailgun.net |
11 | — | Check → |
| 147.253.221.176 | mta-221-176.sparkpostmail.com |
2 | — | Check → |
| 54.240.40.225 | a40-225.smtp-out.amazonses.com |
1 | 1 | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
rebrandly.com | Customer.io 29 Intercom 25 Amazon SES 1 |