Emailmastery uses Beehiiv as their primary email service provider. Their email authentication setup is good (score 73/100). Missing: 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.
DMARC reports sent to Postmark DMARC. Policy
p=none is monitor-only — receivers won't act on spoofing yet.
SPF alignment: all 21 observed emails use a return-path aligned with emailmastery.org (em844.emailmastery.org). SPF authenticates the visible From — supports DMARC directly.
DKIM alignment: all 18 observed emails sign with a domain aligned with emailmastery.org (emailmastery.org). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 100% TLS 1.3 (across 8 sends).
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: emailmastery.org, em844.emailmastery.org
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 | 18 | 90.0% |
| promotions | 2 | 10.0% |
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 % |
|---|---|---|---|---|---|
| Beehiiv | 19 | 89.5% | 10.5% | 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 emailmastery.org has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Reputation |
|---|---|---|---|
| 159.183.141.176 | o13.ptr6032.mail.beehiiv.com |
6 | Check → |
| 149.72.214.254 | o6.ptr8314.mail.beehiiv.com |
6 | Check → |
| 149.72.123.205 | o1.mail.beehiiv.com |
5 | Check → |
| 149.72.190.201 | o9.ptr9577.mail.beehiiv.com |
2 | Check → |
| 149.72.184.219 | o31.ptr6229.mail.beehiiv.com |
2 | Check → |
| 149.72.186.207 | o32.ptr6346.mail.beehiiv.com |
1 | Check → |
| 159.183.141.183 | o14.ptr1576.mail.beehiiv.com |
1 | Check → |
Per-IP inbox / promotions / spam is being collected and will appear here as new emails are observed.
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
emailmastery.org | Beehiiv 25 |