Airbnb uses SendGrid as their primary email service provider. They rank #937 in the Tranco list of most-popular domains. We've also observed sends via Mailgun. Their email authentication setup is solid (score 95/100). We've recorded 2 ESP changes since first observing this brand.
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 10 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to airbnb.com. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: all 64 observed emails use a return-path aligned with airbnb.com (em5923.automated.airbnb.com, em5726.express.airbnb.com, em6820.discover.airbnb.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 56 observed emails sign with a domain aligned with airbnb.com (automated.airbnb.com, express.airbnb.com, discover.airbnb.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 86% TLS 1.3 (across 28 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 9 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Mailgun 4ESPs 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: airbnb.com, em5923.automated.airbnb.com, email.airbnb.com, em5726.express.airbnb.com, em6820.discover.airbnb.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 | 67 | 94.4% |
| promotions | 4 | 5.6% |
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 % |
|---|---|---|---|---|---|
| Mailgun | 3 | 100.0% | 0.0% | 0.0% | |
| SendGrid | 58 | 93.1% | 6.9% | 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 airbnb.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 50.31.32.8 | o14.email.airbnb.com |
15 | 3 | Check → |
| 50.31.32.60 | pnkfnhpc.outbound-mail.sendgrid.net |
13 | 2 | Check → |
| 167.89.102.173 | xtrwssxd.outbound-mail.sendgrid.net |
11 | 2 | Check → |
| 167.89.32.249 | o7.email.airbnb.com |
7 | 1 | Check → |
| 167.89.32.207 | o3.email.airbnb.com |
7 | 1 | Check → |
| 50.31.32.146 | o16.email.airbnb.com |
4 | 1 | Check → |
| 167.89.32.204 | o5.email.airbnb.com |
3 | — | Check → |
| 167.89.102.162 | xtrwssxn.outbound-mail.sendgrid.net |
3 | 3 | Check → |
| 50.31.32.19 | o12.email.airbnb.com |
2 | — | Check → |
| 50.31.32.157 | o11.email.airbnb.com |
2 | — | Check → |
| 167.89.35.173 | o9.email.airbnb.com |
2 | — | Check → |
| 159.183.223.89 | o30.email.airbnb.com |
1 | — | Check → |
| 159.183.132.150 | o26.email.airbnb.com |
1 | — | Check → |
| 50.31.33.106 | o15.email.airbnb.com |
1 | — | Check → |
| 167.89.32.208 | o6.email.airbnb.com |
1 | — | Check → |
| 167.89.102.165 | o19.email.airbnb.com |
1 | 1 | Check → |
