Psu uses Mailchimp for marketing email and SendGrid for transactional/notifications. They rank #1,158 in the Tranco list of most-popular domains. We've also observed sends via Amazon SES. Email goes out from 3 different subdomains. Their email authentication setup is incomplete (score 53/100). Missing: DMARC, DMARC enforcement.
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 3 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to psu.edu. Policy
p=none is monitor-only — receivers won't act on spoofing yet.
SPF alignment: 58% of observed emails use an aligned return-path (email.alumni.psu.edu, lists.psu.edu); the rest use third-party paths (mail123.suw111.mcdlv.net, mail248.sea71.mcsv.net, mail10.wdc01.mcdlv.net) where DMARC has to rely on DKIM alignment.
DKIM alignment: 67% of observed emails sign with an aligned DKIM key (alumni.psu.edu, psu.edu); the rest sign with third-party keys (mailchimpapp.net, gmail.mcsv.net) where DMARC has to rely on SPF alignment.
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Amazon SES 1ESPs 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: psu.edu, email.alumni.psu.edu, mail123.suw111.mcdlv.net, lists.psu.edu, mail248.sea71.mcsv.net, mail10.wdc01.mcdlv.net, mail132.atl121.mcsv.net, alumni.psu.edu, sc-cms.psu.edu, giveto.psu.edu, cac.psu.edu
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 | 8 | 88.9% |
| promotions | 1 | 11.1% |
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 % |
|---|---|---|---|---|---|
| Mailchimp | 1 | 100.0% | 0.0% | 0.0% | |
| SendGrid | 6 | 100.0% | 0.0% | 0.0% | |
| Amazon SES | 1 | 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 psu.edu has been observed sending from, and where their mail landed in Gmail.
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
psu.edu | SendGrid 6 Mailchimp 1 | |
alumni.psu.edu | Mailchimp 1 | |
sc-cms.psu.edu | Amazon SES 1 |