esp
According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Blackbaud Luminate (Convio) is the email service provider (ESP) for 294 domains — 0.05% of 617,702 SPF-publishing domains. Its strongest TLD is .org (82.0% of its domains). Detection: include: mechanisms in the SPF record.
What else the same 294 domains use — cross-tabulated from the same daily snapshot (2026-07-13).
| Type | Service | Domains | Share of Blackbaud Luminate (Convio) users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 171 | 58.2% |
| Mailbox | Google Workspace | 34 | 11.6% |
| Mailbox | Unknown / Other | 15 | 5.1% |
| Mailbox | Proofpoint | 15 | 5.1% |
| Mailbox | Barracuda | 14 | 4.8% |
| Mailbox | Mimecast | 13 | 4.4% |
| ESP | Blackbaud | 140 | 47.6% |
| ESP | Mailchimp | 32 | 10.9% |
| ESP | Salesforce | 32 | 10.9% |
| ESP | SendGrid (Twilio) | 28 | 9.5% |
294 domains in the Tranco top-1M use Blackbaud Luminate (Convio) as their email service provider (ESP) as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.
Blackbaud Luminate (Convio) holds 0.05% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-13). The number is recomputed every day.
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 2026-07-13).
Amazon SES (6.21%) · SendGrid (Twilio) (4.76%) · Mailgun (4.11%) · Zendesk (3.86%) · Mailchimp (3.69%) · Mandrill (3.36%) · HubSpot (3.18%) · Salesforce (2.62%) · Mailjet (Sinch) (2.13%) · Cloudflare Email Routing (1.80%)
Showing 100 of 294 domains.