If you send email through one of Act-On's shared sending environments, this is where you can check how that environment is performing. We monitor these environments closely and make adjustments as needed to keep delivery rates high for every sender who shares them.
Below are the average delivery rates for Act-On's shared sending environments for the previous month. "Delivered Percent" means that the mail was accepted by receiving servers and not blocked, bounced, or rejected.
June 2026 Statistics
| Shared Environment | Delivered Percent |
| Shared Sending Environment 1 | 99.98% |
| Shared Sending Environment 2 | 99.25% |
| Shared Sending Environment 3 | 99.88% |
| Shared Sending Environment 4 | 98.83% |
| Shared Sending Environment 5 | 99.09% |
| Onboarding Sending Environment** | 99.75% |
**The Onboarding Shared Environment is used exclusively for new senders until all technical requirements are complete.
If you send from a Dedicated IP, your mail will not be sent from one of the shared environments listed above.
We will periodically adjust senders' environments to ensure optimal delivery rates for all.
Historical Shared Environment Statistics
| Shared Environment | May | Apr | Mar | Feb | Jan | Dec | Nov |
| Shared Sending Environment 1 | 98.63% | 99.05% | 98.75% | 98.92% | 98.72% | 98.79% | 98.96% |
| Shared Sending Environment 2 | 99.08% | 99.13% | 99.25% | 99.20% | 99.23% | 99.29% | 98.99% |
| Shared Sending Environment 3 | 99.89% | 99.85% | 99.80% | 99.87% | 99.90% | 99.84% | 99.44% |
| Shared Sending Environment 4 | 98.45% | 98.48% | 98.24% | 98.53% | 98.78% | 98.91% | 98.95% |
| Shared Sending Environment 5 | 98.88% | 98.63% | 98.84% | 99.01% | 99.07% | 99.02% | 99.02% |
| Onboarding Sending Environment** | 99.24% | 99.21% | 99.74% | 99.52% | 99.64% | 99.65% | 99.47% |
Following email best practices will help you and the shared sending environments maintain peak performance. Please review our guides on email best practices and deliverability for more in-depth information regarding proven best practices and techniques.
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