Lastpass uses Marketo for marketing email and SendGrid for transactional/notifications. They rank #2,537 in the Tranco list of most-popular domains. We've also observed sends via 2 other providers: EcoSend, Acoustic. Email goes out from 4 different subdomains. 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 dmarc-report.com. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: 93% of observed emails use an aligned return-path (em2627.lastpass.com, em8318.mail.lastpass.com, gsxemail.lastpass.com); the rest use third-party paths (potomac1050.mktomail.com) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 23 observed emails sign with a domain aligned with lastpass.com (lastpass.com, mail.lastpass.com, t.lastpass.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 87% TLS 1.3 (across 15 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 7 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
EcoSend 3 Acoustic 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: lastpass.com, em2627.lastpass.com, em8318.mail.lastpass.com, bounce.t.lastpass.com, em5156.lastpass.com, gsxemail.lastpass.com, potomac1050.mktomail.com, m.lastpass.com, mail.lastpass.com, t.lastpass.com, ptr8339.lastpass.com, ptr4457.lastpass.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 | 33 | 97.1% |
| promotions | 1 | 2.9% |
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 % |
|---|---|---|---|---|---|
| EcoSend | 3 | 100.0% | 0.0% | 0.0% | |
| SendGrid | 21 | 95.2% | 4.8% | 0.0% | |
| Marketo | 2 | 100.0% | 0.0% | 0.0% | |
| Acoustic | 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 lastpass.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 134.128.94.10 | o3.ptr4457.lastpass.com |
13 | 1 | Check → |
| 159.183.107.133 | o1.ptr8954.lastpass.com |
7 | 4 | Check → |
| 134.128.73.143 | o2.ptr8339.lastpass.com |
6 | — | Check → |
| 129.33.240.97 | mail7392.t.lastpass.com |
2 | — | Check → |
| 192.28.152.140 | potomac2140.mktomail.com |
2 | 2 | Check → |
| 199.15.213.51 | potomac1051.mktomail.com |
1 | — | Check → |
| 149.72.148.187 | o24.ptr1257.lastpass.com |
1 | — | Check → |