Quickmail uses HubSpot for marketing email and Postmark for transactional/notifications. We've also observed sends via Bento. Email goes out from 2 different subdomains. Their email authentication setup is solid (score 95/100). We've recorded 2 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 9 emails 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: 86% of observed emails use an aligned return-path (bounces.quickmail.io, em4839.marketing.quickmail.io); the rest use third-party paths (themathergroupllc.com, bounce.helpscout.net) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 45 observed emails sign with a domain aligned with quickmail.io (quickmail.io, marketing.quickmail.io). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 100% TLS 1.3 (across 18 sends).
Delivery (last 7 days): 50% under 10 seconds, 0% over 1 minute (across 6 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Bento 1ESPs 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: quickmail.io, bounces.quickmail.io, bounce.helpscout.net, themathergroupllc.com, em4839.marketing.quickmail.io, marketing.quickmail.io
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 | 40 | 100.0% |
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 % |
|---|---|---|---|---|---|
| Bento | 1 | 100.0% | 0.0% | 0.0% | |
| HubSpot | 3 | 100.0% | 0.0% | 0.0% | |
| Postmark | 33 | 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 quickmail.io has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 50.31.205.206 | mta206-ab1.mtasv.net |
10 | 4 | Check → |
| 50.31.205.204 | mta204-ab1.mtasv.net |
10 | — | Check → |
| 104.245.209.200 | mta200a-ord.mtasv.net |
5 | — | Check → |
| 104.245.209.235 | mta235b-ord.mtasv.net |
5 | — | Check → |
| 104.245.209.246 | mta246b-ord.mtasv.net |
4 | 1 | Check → |
| 104.245.209.237 | mta237b-ord.mtasv.net |
3 | — | Check → |
| 104.245.209.202 | mta202a-ord.mtasv.net |
2 | — | Check → |
| 50.31.205.205 | mta205-ab1.mtasv.net |
2 | 1 | Check → |
| 50.31.205.207 | mta207-ab1.mtasv.net |
1 | — | Check → |
| 159.183.154.15 | wfbtwxhf.outbound-mail.sendgrid.net |
1 | — | Check → |
| 104.245.209.203 | mta203a-ord.mtasv.net |
1 | — | Check → |
| 50.31.205.203 | mta203-ab1.mtasv.net |
1 | 1 | Check → |