Instantly uses SendGrid as their primary email service provider. They rank #61,373 in the Tranco list of most-popular domains. We've also observed sends via Postmark. Email goes out from 2 different subdomains. Their email authentication setup is solid (score 85/100). We've recorded 1 ESP change since first observing this brand.
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 1 email we've observed. DMARC policy is read live from DNS.
DMARC reports sent to Postmark DMARC. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: 95% of observed emails use an aligned return-path (em4849.instantly.ai, outbound.intercom.instantly.ai, pm-bounces.instantly.ai); the rest use third-party paths (securespeedyloan.com) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 15 observed emails sign with a domain aligned with instantly.ai (instantly.ai, nt1.instantly.ai). DKIM authenticates the visible From — supports DMARC directly.
TLS: 40% TLS 1.3, 60% TLS 1.2 (across 5 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Intercom 13 Postmark 5ESPs 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: instantly.ai, em4849.instantly.ai, outbound.intercom.instantly.ai, pm-bounces.nt1.instantly.ai, securespeedyloan.com, pm-bounces.instantly.ai, nt1.instantly.ai
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 | 24 | 92.3% |
| promotions | 2 | 7.7% |
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 % |
|---|---|---|---|---|---|
| Intercom | 10 | 100.0% | 0.0% | 0.0% | |
| Postmark | 5 | 100.0% | 0.0% | 0.0% | |
| SendGrid | 8 | 75.0% | 25.0% | 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 instantly.ai has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 143.55.229.150 | v5150.v56063cb6.use4.send.mailgun.net |
4 | — | Check → |
| 143.55.229.128 | v5128.v56063cb6.use4.send.mailgun.net |
3 | — | Check → |
| 104.245.209.235 | mta235b-ord.mtasv.net |
2 | — | Check → |
| 50.31.205.206 | mta206-ab1.mtasv.net |
2 | 1 | Check → |
| 143.55.229.127 | v5127.v56063cb6.use4.send.mailgun.net |
1 | — | Check → |
| 143.55.229.144 | v5144.v56063cb6.use4.send.mailgun.net |
1 | — | Check → |
| 143.55.229.143 | v5143.v56063cb6.use4.send.mailgun.net |
1 | — | Check → |
| 104.245.209.202 | mta202a-ord.mtasv.net |
1 | — | Check → |
| 143.55.229.149 | v5149.v56063cb6.use4.send.mailgun.net |
1 | — | Check → |
| 143.55.229.141 | v5141.v56063cb6.use4.send.mailgun.net |
1 | — | Check → |