Reddit uses HubSpot for marketing email and Amazon SES for transactional/notifications. They rank #106 in the Tranco list of most-popular domains. Email goes out from 3 different subdomains. Their email authentication setup is solid (score 100/100). We've recorded 2 ESP changes since first observing this brand.
Amazon SESAuthentication 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 cp-dmarc.com. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: observed emails use a third-party return-path (amazonses.com, bf01x.hubspotemail.net, gmail.com) — SPF passes there but doesn't align with reddit.com, so DMARC has to rely on DKIM alignment.
DKIM alignment: all 275 observed emails sign with a domain aligned with reddit.com (redditmail.com, policy.redditmail.com, reddit.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 100% TLS 1.3 (across 121 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 26 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: reddit.com, amazonses.com, bf01x.hubspotemail.net, gmail.com, bf58x.hubspotemail.net, redditmail.com, policy.redditmail.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 | 188 | 90.0% |
| promotions | 9 | 4.3% |
| spam | 12 | 5.7% |
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 | 176 | 89.8% | 3.4% | 6.8% | |
| HubSpot | 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 reddit.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Reputation |
|---|---|---|---|
| 158.247.18.14 | bid46lc.bf01x.hubspotemail.net |
2 | Check → |
| 158.247.18.12 | bid46la.bf01x.hubspotemail.net |
1 | Check → |
| 158.247.18.93 | bid46nj.bf01x.hubspotemail.net |
1 | Check → |
| 143.244.95.26 | bd77hc8.bf58x.hubspotemail.net |
1 | Check → |
| 23.251.229.110 | e229-110.smtp-out.amazonses.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) |
|---|---|---|
redditmail.com | Amazon SES 321 | |
policy.redditmail.com | Amazon SES 12 | |
reddit.com | HubSpot 7 Amazon SES 1 |