Tripadvisor uses Braze for marketing email and SparkPost for transactional/notifications. They rank #568 in the Tranco list of most-popular domains. Their email authentication setup is solid (score 100/100).
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 tripadvisor.com. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: all 9 observed emails use a return-path aligned with tripadvisor.com (bounce.mp1.tripadvisor.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 8 observed emails sign with a domain aligned with tripadvisor.com (mp1.tripadvisor.com). DKIM authenticates the visible From — supports DMARC directly.
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).
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: tripadvisor.com, bounce.mp1.tripadvisor.com, mp1.tripadvisor.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 | 9 | 90.0% |
| promotions | 1 | 10.0% |
Placement observed in Outlook / Microsoft 365 mailboxes. Focused Inbox splits mail into two tabs, "Focused" (inbox) and "Other", plus Junk. 0% reached the Focused inbox across 1 observed email.
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 % |
|---|---|---|---|---|---|
| Braze | 8 | 100.0% | 0.0% | 0.0% |
Monthly 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 tripadvisor.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 137.22.224.207 | rgnxt4pu.mp1.tripadvisor.com |
2 | — | Check → |
| 137.22.227.12 | asxsepy9.mp1.tripadvisor.com |
2 | — | Check → |
| 137.22.225.100 | zaunw9oe.mp1.tripadvisor.com |
1 | — | Check → |
| 137.22.236.192 | fhigssqs.mp1.tripadvisor.com |
1 | — | Check → |
| 137.22.225.183 | fpahgmpn.mp1.tripadvisor.com |
1 | — | Check → |
| 137.22.227.229 | rhnxfrxs.mp1.tripadvisor.com |
1 | — | Check → |
| 137.22.228.57 | jsdoynsa.mp1.tripadvisor.com |
1 | — | Check → |
| 137.22.227.35 | eqfkz6t0.mp1.tripadvisor.com |
1 | 1 | Check → |
| 192.174.83.40 | unknown |
1 | — | Check → |