Bookseats uses Klaviyo for marketing email and SendGrid for transactional/notifications. Email goes out from 2 different subdomains. Their email authentication setup is good (score 80/100). We've recorded 1 ESP change 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 bookseats.com. Policy
p=quarantine means receivers actively block or quarantine spoofed mail.
SPF alignment: all 14 observed emails use a return-path aligned with bookseats.com (em7463.bookseats.com, go.bookseats.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 69 observed emails sign with a domain aligned with bookseats.com (bookseats.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 100% TLS 1.3 (across 34 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 3 sends).
Gmail's own filter showed these warnings to real subscribers in their inbox — independent of SPF/DKIM/DMARC pass/fail status. A consistent pattern often signals reputation issues or brand-impersonation concerns.
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: bookseats.com, em7463.bookseats.com, go.bookseats.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 | 56 | 94.9% |
| promotions | 3 | 5.1% |
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 % |
|---|---|---|---|---|---|
| Klaviyo | 52 | 94.2% | 5.8% | 0.0% | |
| SendGrid | 6 | 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 bookseats.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 170.203.28.47 | kl-203-28-47.kmta.shared.klaviyomail.com |
17 | 3 | Check → |
| 170.203.16.50 | kl-203-16-50.kmta.shared.klaviyomail.com |
9 | — | Check → |
| 170.203.24.13 | kl-203-24-13.kmta.shared.klaviyomail.com |
8 | 2 | Check → |
| 170.203.20.48 | kl-203-20-48.kmta.shared.klaviyomail.com |
7 | 2 | Check → |
| 170.203.28.40 | kl-203-28-40.kmta.shared.klaviyomail.com |
5 | 1 | Check → |
| 170.203.24.48 | kl-203-24-48.kmta.shared.klaviyomail.com |
5 | — | Check → |
| 170.203.28.51 | kl-203-28-51.kmta.shared.klaviyomail.com |
4 | 1 | Check → |
| 170.203.16.48 | kl-203-16-48.kmta.shared.klaviyomail.com |
4 | — | Check → |
| 149.72.114.91 | s.wrqvtnrb.outbound-mail.sendgrid.net |
2 | — | Check → |
| 159.183.224.100 | s.wfbtzhsq.outbound-mail.sendgrid.net |
2 | — | Check → |
| 149.72.61.226 | s.wrqvpdzn.outbound-mail.sendgrid.net |
2 | — | Check → |
| 167.89.86.241 | s.xtrwrsfk.outbound-mail.sendgrid.net |
2 | — | Check → |
| 159.183.224.108 | s.wfbtzhsc.outbound-mail.sendgrid.net |
2 | — | Check → |
| 170.203.20.221 | kl-203-20-221.kmta.shared.klaviyomail.com |
1 | — | Check → |
| 170.203.28.37 | kl-203-28-37.kmta.shared.klaviyomail.com |
1 | — | Check → |
| 159.183.224.10 | s.wfbtzhhx.outbound-mail.sendgrid.net |
1 | 1 | Check → |