MailerLite uses MailerLite for marketing email and Mailersend for transactional/notifications. They rank #3,951 in the Tranco list of most-popular domains. We've also observed sends via Amazon SES. Their email authentication setup is solid (score 95/100). We've recorded 12 ESP changes since first observing this brand.
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 Validity (250ok). Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: 42% of observed emails use an aligned return-path (mta.mailerlite.com, outbound.intercom.mailerlite.com); the rest use third-party paths (send.mailerlite.eu, amazonses.com, mlsend.com) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 102 observed emails sign with a domain aligned with mailerlite.com (mailerlite.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 95% TLS 1.3 (across 61 sends).
Delivery (last 7 days): 47% under 10 seconds, 40% over 1 minute (across 15 sends).
Gmail's own filter showed these warnings to real subscribers in their inbox — independent of SPF/DKIM/DMARC pass/fail status. A consistent pattern often signals reputation issues or brand-impersonation concerns.
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Intercom 23 Amazon SES 19ESPs 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: mailerlite.com, outbound.intercom.mailerlite.com, send.mailerlite.eu, mlsend.com, mta.mailerlite.com, amazonses.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 | 110 | 96.5% |
| promotions | 1 | 0.9% |
| spam | 3 | 2.6% |
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 % |
|---|---|---|---|---|---|
| MailerLite | 46 | 93.5% | 0.0% | 6.5% | |
| Amazon SES | 16 | 100.0% | 0.0% | 0.0% | |
| Intercom | 20 | 95.0% | 5.0% | 0.0% | |
| Mailersend | 23 | 100.0% | 0.0% | 0.0% |
Monthly 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 mailerlite.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 212.11.79.147 | mail147.mailersend.net |
14 | 2 | Check → |
| 192.174.84.149 | mta-174-84-149.intercom.com.sparkpostmail.com |
8 | — | Check → |
| 212.11.79.149 | mail149.mailersend.net |
7 | 1 | Check → |
| 192.174.84.143 | mta-174-84-143.intercom.com.sparkpostmail.com |
6 | 1 | Check → |
| 185.225.161.38 | mail038.mlsend.com |
6 | — | Check → |
| 185.225.161.37 | mail037.mlsend.com |
5 | 2 | Check → |
| 185.225.161.74 | mail074.mlsend.com |
5 | 4 | Check → |
| 212.11.79.150 | mail150.mailersend.net |
4 | — | Check → |
| 192.174.84.113 | mta-174-84-113.intercom.com.sparkpostmail.com |
4 | — | Check → |
| 54.240.9.2 | a9-2.smtp-out.amazonses.com |
4 | — | Check → |
| 185.225.161.10 | mail010.mlsend.com |
4 | — | Check → |
| 185.225.161.46 | mail046.mlsend.com |
3 | 1 | Check → |
| 185.225.161.36 | mail036.mlsend.com |
3 | 2 | Check → |
| 54.240.9.8 | a9-8.smtp-out.amazonses.com |
3 | — | Check → |
| 185.225.161.44 | mail044.mlsend.com |
3 | — | Check → |
| 185.225.161.28 | mail028.mlsend.com |
3 | — | Check → |
| 212.11.79.148 | mail148.mailersend.net |
3 | — | Check → |
| 185.225.161.71 | mail071.mlsend.com |
3 | 3 | Check → |
| 54.240.9.5 | a9-5.smtp-out.amazonses.com |
2 | — | Check → |
| 185.225.161.30 | mail030.mlsend.com |
2 | — | Check → |
| 185.225.161.11 | mail011.mlsend.com |
2 | — | Check → |
| 212.11.79.160 | mail160.mailersend.net |
2 | — | Check → |
| 192.174.84.114 | mta-174-84-114.intercom.com.sparkpostmail.com |
2 | — | Check → |
| 54.240.9.25 | a9-25.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.10.10 | a10-10.smtp-out.amazonses.com |
2 | — | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
mailerlite.com | MailerLite 54 Mailersend 30 Intercom 23 Amazon SES 19 |
