Blindboxreviews uses SMTP2GO 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.
SPF / DKIM / DMARC above reflect the last 9 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to cloudflare.net. Policy
p=none is monitor-only — receivers won't act on spoofing yet.
SPF alignment: 80% of observed emails use an aligned return-path (em731145.blindboxreviews.com); the rest use third-party paths (red-robot.net) where DMARC has to rely on DKIM alignment.
DKIM alignment: 90% of observed emails sign with an aligned DKIM key (blindboxreviews.com); the rest sign with third-party keys (smtpservice.net) where DMARC has to rely on SPF alignment.
TLS: modern — 100% TLS 1.3 (across 10 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 6 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.
"Observed" pills mean we detected emails from these ESPs, but they don't appear in any SPF record we probed. They may still be properly authorized — sending infrastructure can live on subdomains we haven't seen yet, or use IP-listing instead of include: directives.
No additional ESPs authorized in the brand's SPF beyond the confirmed senders above.
Probed: blindboxreviews.com, em731145.blindboxreviews.com, red-robot.net
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 % |
|---|---|---|---|---|---|
| SMTP2GO | 10 | 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 blindboxreviews.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 158.120.84.251 | e3i251.smtp2go.com |
8 | 5 | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
blindboxreviews.com | SMTP2GO 10 |