Constant Contact (CCSend) email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 20, 2026), Constant Contact (CCSend) is the email service provider (ESP) for 78 domains — 0.01% of 638,158 SPF-publishing domains. Its strongest TLD is .com (69.2% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-20 DNS snapshot.
What Constant Contact (CCSend) represents in this dataset
Constant Contact — US SMB newsletter ESP, decades-old leader.
Directory category: Esp. The classification comes from include: mechanisms in the SPF record. It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-20 snapshot shows about Constant Contact (CCSend)
Across 6 distinct TLDs its top three are .com (69.2%), .org (25.6%), .aero (1.3%) — together 96.2% of the 78 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. The service most often observed on the same domains is Microsoft 365 (Mailbox, 31 domains, 39.7% of them), followed by Google Workspace (26.9%). Directly comparable by the same detection rule: Amazon SES, SendGrid (Twilio), Mailgun. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-20); a domain appears here when its published records match the include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with Constant Contact (CCSend)
What else the same 78 domains use — cross-tabulated from the same daily snapshot (2026-09-20).
| Type | Service | Domains | Share of Constant Contact (CCSend) users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 31 | 39.7% |
| Mailbox | Google Workspace | 21 | 26.9% |
| Mailbox | Proofpoint | 4 | 5.1% |
| Mailbox | Mimecast | 4 | 5.1% |
| Mailbox | Proofpoint Essentials | 3 | 3.8% |
| Mailbox | Rackspace Email | 3 | 3.8% |
| ESP | Constant Contact | 35 | 44.9% |
| ESP | Mailchimp | 16 | 20.5% |
| ESP | Amazon SES | 12 | 15.4% |
| ESP | Mandrill | 11 | 14.1% |
TLD distribution (top 6 of 6)
Frequently asked questions
How many domains use Constant Contact (CCSend)?
78 domains in the Tranco top-1M use Constant Contact (CCSend) as their email service provider (ESP) as of September 20, 2026, according to Live Direct Marketing's daily DNS scan.
What is Constant Contact (CCSend)'s market share?
Constant Contact (CCSend) holds 0.01% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-20). The number is recomputed every day.
What are the biggest alternatives to Constant Contact (CCSend)?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Zendesk, Mailchimp (as of 2026-09-20).
Largest email service provider (ESP)s in this category
Amazon SES (6.21%) · SendGrid (Twilio) (4.67%) · Mailgun (4.01%) · Zendesk (3.77%) · Mailchimp (3.61%) · Mandrill (3.26%) · HubSpot (3.17%) · Salesforce (2.57%) · Mailjet (Sinch) (2.13%) · Cloudflare Email Routing (1.96%)
Domain sample (top 78 by Tranco rank)
Showing 78 of 78 domains.