Email delivery service with CampaignLark newsletter tool.
Maileroo is the 19th most popular transactional ESP we track.
Detected by 4 distinct extension users.
Distribution of brands using Maileroo by industry. Helps you gauge whether this ESP is popular with businesses similar to yours. Brands tagged in two industries are counted in both.
Based on 4 of 5 brands tagged (80% coverage). Industries assigned automatically using AI; not every brand is tagged yet.
Where this ESP's emails land in Gmail. Each brand counted once (average of per-brand percentages) so a single high-volume sender can't dominate. Spam placement is mostly driven by the sender (list quality, content, complaint rate). This number reflects both the ESP's infrastructure AND the kind of senders who choose it — not just deliverability quality.
By volume: inbox 23 · promotions 2 (26 emails observed)
Percentages are averaged per brand (each counted once) across 2 brands using Maileroo with at least 5 placement observations each.
5 as their primary ESP. Primary users are listed first, then secondary.
| Brand | Role | Obs | Spam | Last seen |
|---|---|---|---|---|
|
Mcserverhost
mcserverhost.com
|
primary | 1 | — | 2026-05-16 |
|
Maileroo
maileroo.com
|
primary | 21 | 0.0% | 2026-06-15 |
|
Campaignlark
campaignlark.com
|
primary | 1 | — | 2026-05-31 |
|
Campaignlark
campaignlark.io
|
primary | 2 | — | 2026-05-24 |
|
Clsend
clsend.com
|
primary | 5 | 0.0% | 2026-06-29 |
IPs we've observed sending via Maileroo. "Brands" = distinct brands seen on each IP; "Placement" = where those emails landed in Gmail (inbox / promotions / spam). Click "reputation" to check the IP on Cisco Talos.
| IP | Hostname | Brands | Obs | Placement | Reputation |
|---|---|---|---|---|---|
| 188.241.220.6 | mta3-10.maileroo.com |
2 | 10 | — | Check → |
| 194.127.197.3 | mta3.campaignlark.net |
2 | 3 | 1 | Check → |
| 194.127.197.9 | mta9.campaignlark.net |
1 | 3 | — | Check → |
| 194.127.197.7 | mta7.campaignlark.net |
1 | 2 | — | Check → |
| 194.127.197.16 | mta-127-197-16.campaignlark.net |
2 | 2 | — | Check → |
| 194.127.197.11 | mta-127-197-11.campaignlark.net |
1 | 2 | — | Check → |
| 194.127.197.4 | mta-127-197-4.campaignlark.net |
2 | 2 | 1 | Check → |
| 194.127.197.15 | mta-127-197-15.campaignlark.net |
1 | 1 | — | Check → |
| 194.127.197.12 | mta-127-197-12.campaignlark.net |
1 | 1 | — | Check → |
| 194.127.197.2 | mta2.campaignlark.net |
1 | 1 | 1 | Check → |
| 194.127.197.10 | mta-127-197-10.campaignlark.net |
1 | 1 | — | Check → |