G2 uses Iterable for marketing email and SparkPost for transactional/notifications. They rank #3,905 in the Tranco list of most-popular domains. We've also observed sends via 3 other providers: Marketo, Salesforce CRM, Amazon SES. Email goes out from 3 different subdomains. Their email authentication setup is solid (score 100/100). We've recorded 8 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 easydmarc.us. Policy
p=reject means receivers actively block or quarantine spoofed mail.
SPF alignment: 39% of observed emails use an aligned return-path (envelope.g2.com, bounces1.g2.com); the rest use third-party paths (amazonses.com) where DMARC has to rely on DKIM alignment.
DKIM alignment: all 83 observed emails sign with a domain aligned with g2.com (g2.com, account.g2.com, hello.g2.com). DKIM authenticates the visible From — supports DMARC directly.
TLS: modern — 84% TLS 1.3 (across 37 sends).
Delivery: fast — 100% of emails in the last 7 days arrive in under 10 seconds (across 3 sends).
Brands often use multiple ESPs (e.g. one for marketing, another for transactional/notifications).
Marketo 26 Salesforce CRM 2 Amazon SES 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: g2.com, bounces1.g2.com, amazonses.com, envelope.g2.com, account.g2.com, hello.g2.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 | 55 | 62.5% |
| promotions | 33 | 37.5% |
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 % |
|---|---|---|---|---|---|
| Iterable | 54 | 40.7% | 59.3% | 0.0% | |
| SparkPost | 3 | 100.0% | 0.0% | 0.0% | |
| Amazon SES | 1 | 100.0% | 0.0% | 0.0% | |
| Marketo | 25 | 96.0% | 4.0% | 0.0% | |
| Salesforce CRM | 2 | 100.0% | 0.0% | 0.0% |
Weekly 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 g2.com has been observed sending from, and where their mail landed in Gmail.
| IP | Hostname | Obs | Placement | Reputation |
|---|---|---|---|---|
| 192.28.149.129 | envelope.g2.com |
26 | 3 | Check → |
| 156.70.62.157 | mta-70-62-157.sparkpostmail.com |
10 | 1 | Check → |
| 54.240.73.37 | a73-37.smtp-out.amazonses.com |
6 | — | Check → |
| 23.251.255.238 | e255-238.smtp-out.amazonses.com |
4 | — | Check → |
| 76.223.141.228 | c141-228.smtp-out.amazonses.com |
3 | 2 | Check → |
| 54.240.78.81 | a78-81.smtp-out.amazonses.com |
3 | 1 | Check → |
| 76.223.142.9 | c142-9.smtp-out.amazonses.com |
3 | 1 | Check → |
| 23.251.255.225 | e255-225.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.78.190 | a78-190.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.79.140 | a79-140.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.78.138 | a78-138.smtp-out.amazonses.com |
2 | — | Check → |
| 23.251.255.177 | e255-177.smtp-out.amazonses.com |
2 | — | Check → |
| 23.251.255.160 | e255-160.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.79.97 | a79-97.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.78.210 | a78-210.smtp-out.amazonses.com |
2 | — | Check → |
| 54.240.79.30 | a79-30.smtp-out.amazonses.com |
2 | — | Check → |
| 156.70.62.163 | mta-70-62-163.sparkpostmail.com |
2 | 2 | Check → |
| 54.240.79.205 | a79-205.smtp-out.amazonses.com |
1 | — | Check → |
| 23.251.255.191 | e255-191.smtp-out.amazonses.com |
1 | — | Check → |
| 23.251.255.248 | e255-248.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.73.42 | a73-42.smtp-out.amazonses.com |
1 | — | Check → |
| 76.223.141.209 | c141-209.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.79.199 | a79-199.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.79.101 | a79-101.smtp-out.amazonses.com |
1 | — | Check → |
| 54.240.78.122 | a78-122.smtp-out.amazonses.com |
1 | — | Check → |
| Domain | ESPs detected | Delivery (7d) |
|---|---|---|
g2.com | Iterable 54 Marketo 26 Salesforce CRM 2 Amazon SES 1 | |
account.g2.com | SparkPost 5 Iterable 5 | |
hello.g2.com | Iterable 2 |
