Prudentinvestorbrief uses Iterable for marketing email and Amazon SES for transactional/notifications. Their email authentication setup is solid (score 85/100). We've recorded 1 ESP change 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 7 emails we've observed. DMARC policy is read live from DNS.
DMARC enforced with p=reject — receivers actively reject or quarantine spoofed mail. No aggregate reporting destination configured.
SPF alignment: observed emails use a third-party return-path (amazonses.com) — SPF passes there but doesn't align with prudentinvestorbrief.com, so DMARC has to rely on DKIM alignment.
DKIM alignment: all 9 observed emails sign with a domain aligned with prudentinvestorbrief.com (pib.prudentinvestorbrief.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 100% TLS 1.3 (across 7 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 3 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.
No additional ESPs authorized in the brand's SPF beyond the confirmed senders above.
Probed: prudentinvestorbrief.com, amazonses.com, pib.prudentinvestorbrief.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 | 16 | 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 | 9 | 100.0% | 0.0% | 0.0% | |
| Iterable | 7 | 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 prudentinvestorbrief.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 54.240.78.131 | a78-131.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.78.92 | a78-92.smtp-out.amazonses.com |
2 | — | Check → |
| 76.223.141.214 | c141-214.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.79.151 | a79-151.smtp-out.amazonses.com |
2 | 2 | Check → |
| 54.240.78.203 | a78-203.smtp-out.amazonses.com |
1 | — | Check → |
| 76.223.141.211 | c141-211.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.79.230 | a79-230.smtp-out.amazonses.com |
1 | — | Check → |
| 76.223.141.210 | c141-210.smtp-out.amazonses.com |
1 | 1 | Check → |
| 54.240.78.209 | a78-209.smtp-out.amazonses.com |
1 | 1 | Check → |
| 54.240.78.111 | a78-111.smtp-out.amazonses.com |
1 | 1 | Check → |
| 54.240.78.145 | a78-145.smtp-out.amazonses.com |
1 | 1 | Check → |
| 54.240.78.153 | a78-153.smtp-out.amazonses.com |
1 | 1 | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
pib.prudentinvestorbrief.com | Amazon SES 9 Iterable 7 |