Simple email marketing by Sumo Group.
SendFox is the 85th most popular marketing ESP we track.
Detected by 8 distinct extension users.
Distribution of brands using SendFox 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 2 of 3 brands tagged (67% 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 9 · promotions 3 (12 emails observed)
Percentages are averaged per brand (each counted once) across 1 brand using SendFox with at least 5 placement observations each.
Underlying transactional infrastructure SendFox routes through, detected from the sender hostname (PTR record) on each email's Received header. Bigger sample → more accurate.
3 as their primary ESP. Primary users are listed first, then secondary.
| Brand | Role | Obs | Spam | Last seen |
|---|---|---|---|---|
|
Jenni
jenni.works
|
primary | 4 | 0.0% | 2025-10-01 |
|
Methodisch Flexibel
methodisch-flexibel.de
|
primary | 2 | — | 2026-05-04 |
|
Sendfoxmail
sendfoxmail.com
|
primary | 8 | 0.0% | 2026-06-10 |
IPs we've observed sending via SendFox. "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 | Reputation |
|---|---|---|---|---|
| 167.89.35.240 | o9.us1.sendfox.com |
1 | 6 | Check → |
| 168.245.15.33 | o8.email.sendfox.com |
1 | 4 | Check → |
Per-IP inbox / promotions / spam is now being collected and will appear here as new emails are observed.