Expensify uses Mailgun as their primary email service provider. They rank #26,434 in the Tranco list of most-popular domains. We've also observed sends via Amazon SES. 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 1 email we've observed. DMARC policy is read live from DNS.
DMARC reports sent to DMARC Digests. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: all 4 observed emails use a return-path aligned with expensify.com (ses.outbound.expensify.com). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 10 observed emails sign with a domain aligned with expensify.com (expensify.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: 50% TLS 1.3, 50% TLS 1.2 (across 8 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Amazon SES 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: expensify.com, ses.outbound.expensify.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 | 10 | 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 | 4 | 100.0% | 0.0% | 0.0% | |
| Mailgun | 6 | 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 expensify.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 161.38.199.231 | v5231.v5d8cfca0.usw1.send.mailgun.net |
2 | — | Check → |
| 143.55.230.232 | v5232.v5d1da871.use4.send.mailgun.net |
2 | 1 | Check → |
| 216.221.168.222 | g168-222.smtp-out.amazonses.com |
2 | — | Check → |
| 143.55.230.205 | v5205.v5d1da871.use4.send.mailgun.net |
2 | — | Check → |
| 216.221.168.219 | g168-219.smtp-out.amazonses.com |
2 | — | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
expensify.com | Mailgun 6 Amazon SES 4 |
