Sendergen email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Sendergen is the email service provider (ESP) for 299 domains — 0.05% of 637,420 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 299 domains in the Tranco top-1M use Sendergen (0.05% of SPF-publishing domains).
- Snapshot date: 2026-09-24 — recomputed every day.
- Strongest TLD: .com (84.6% of its domains).
- Most co-used service: Google Workspace.
- Directory category: email service provider.
Why Sendergen appears in this category
Sendergen — bulk email service, India-based.
We classify it as a email service provider from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Sendergen is an email service provider (ESP) that handles outbound email delivery and related infrastructure services. It operates as a third-party sending platform, appearing in SPF records across the internet when organisations authorise it to transmit mail on their behalf.
The footprint of Sendergen's deployment reflects presence in the mid-market and long-tail website ecosystem rather than among the largest global brands. Its customer base is concentrated in the .com domain space and frequently overlaps with organisations already using Google Workspace, suggesting it appeals to teams seeking a complementary sending platform for their email infrastructure.
Where Sendergen sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 2 | 0.7% |
| Top 10,000 | 8 | 2.7% |
| Top 100,000 | 61 | 20.4% |
| Top 1,000,000 | 228 | 76.3% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 253 | 84.6% | |
| .org | 18 | 6.0% | |
| .io | 4 | 1.3% | |
| .ai | 3 | 1.0% | |
| .gov | 2 | 0.7% | |
| .ca | 2 | 0.7% | |
| .com.au | 2 | 0.7% | |
| .co.uk | 2 | 0.7% | |
| .es | 1 | 0.3% | |
| .events | 1 | 0.3% |
What Sendergen users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 299 domains.
| Type | Service | Domains | Share of Sendergen users |
|---|---|---|---|
| Mailbox | Google Workspace | 113 | 37.8% |
| Mailbox | Microsoft 365 | 105 | 35.1% |
| Mailbox | Mimecast | 32 | 10.7% |
| Mailbox | Proofpoint | 27 | 9.0% |
| Mailbox | Proofpoint Essentials | 6 | 2.0% |
| Mailbox | Barracuda | 5 | 1.7% |
| ESP | HubSpot | 92 | 30.8% |
| ESP | Salesforce | 87 | 29.1% |
| ESP | Amazon SES | 63 | 21.1% |
| ESP | Zendesk | 58 | 19.4% |
SPF authorisation and third-party sender reputation
When a domain includes Sendergen in its SPF record, that domain is delegating sending authority to Sendergen's infrastructure. This means recipient mail systems will evaluate the message based on both the sender's domain reputation and Sendergen's IP reputation, making the two interdependent. Organisations using Sendergen should verify that the authorisation is intentional and monitor send reputation through the provider's reporting to catch any deliverability issues early.
See the full Sendergen data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What is Sendergen?
Sendergen is an email service provider that handles outbound mail delivery for websites and organisations. It is typically found in SPF records of mid-market and smaller sites, particularly those using Google Workspace, where it serves as a third-party sending platform.
How many domains use Sendergen?
299 domains in the Tranco top-1M use Sendergen as their email service provider (ESP) as of September 24, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Sendergen common enough to affect email deliverability testing?
Sendergen accounts for 0.05% of SPF-publishing domains in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Which countries or TLDs use Sendergen most?
Sendergen's largest TLD is .com (84.6% of its domains); it appears across 21 TLDs in total.