Impact uses Marketo for marketing email and SendGrid for transactional/notifications. They rank #4,932 in the Tranco list of most-popular domains. We've also observed sends via Omnisend. Email goes out from 6 different subdomains. Their email authentication setup is good (score 80/100).
Non-ESP tools detected in this brand's emails. Independent of who sends — a brand can use any combination.
| HTML builder |
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 10 emails we've observed. DMARC policy is read live from DNS.
DMARC reports sent to fdmarc.net. Policy
p=quarantine means receivers actively block or quarantine spoofed mail.
SPF alignment: 92% of observed emails use an aligned return-path (em3626.outreach.impact.com, em.app.impact.com, reply.marketplace.impact.com); the rest use third-party paths (omnisend.com, zendepot.de) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 336 observed emails sign with a domain aligned with impact.com (outreach.impact.com, app.impact.com, marketplace.impact.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 98% TLS 1.3 (across 179 sends).
Delivery: fast — 99% of emails in the last 7 days arrive in under 10 seconds (across 72 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Omnisend 3ESPs 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: impact.com, em.app.impact.com, em3626.outreach.impact.com, mkto.impact.com, reply.marketplace.impact.com, zendepot.de, omnisend.com, em1113.releases.impact.com, outreach.impact.com, app.impact.com, marketplace.impact.com, prtnr.impact.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 | 283 | 88.7% |
| promotions | 27 | 8.5% |
| spam | 9 | 2.8% |
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 % |
|---|---|---|---|---|---|
| SendGrid | 272 | 89.7% | 7.7% | 2.6% | |
| Omnisend | 3 | 66.7% | 33.3% | 0.0% | |
| Marketo | 15 | 100.0% | 0.0% | 0.0% |
Weekly 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 impact.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 159.183.136.75 | o10.ptr1582.outreach.impact.com |
212 | 23 | Check → |
| 198.37.151.191 | o4.em.app.impact.com |
145 | 29 | Check → |
| 159.183.223.242 | o16.ptr9692.impact.com |
5 | — | Check → |
| 192.28.152.140 | potomac2140.mktomail.com |
3 | — | Check → |
| 192.28.150.227 | potomac1227.mktomail.com |
3 | — | Check → |
| 199.15.213.53 | potomac1053.mktomail.com |
2 | — | Check → |
| 192.28.152.139 | potomac2139.mktomail.com |
2 | — | Check → |
| 199.15.213.50 | potomac1050.mktomail.com |
2 | — | Check → |
| 192.28.150.226 | potomac1226.mktomail.com |
2 | 2 | Check → |
| 192.28.152.142 | potomac2142.mktomail.com |
1 | — | Check → |
| 192.28.150.229 | potomac1229.mktomail.com |
1 | — | Check → |
