| Price from | $149/mo | — |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 4 | 4 |
| Spec score · Email Deliverability Software | 8.1 (#12) | 8.1 (#13) |
| API | InboxAlly describes its REST API as available on every plan for programmatic control. | Sendmarc provides API access for automation and integration with SIEM systems. |
| Headquarters | New York City, New York, USA | Wilmington, Delaware, USA |
| Purpose | InboxAlly provides email deliverability tools intended to improve inbox placement and help recover messages classified as spam or promotions. | Sendmarc provides a DMARC management platform for monitoring and enforcing email authentication across domains. |
| Support | Plans include a dedicated Customer Success Manager; the pricing page lists email and live chat for all tiers, with phone and Zoom support for Premium and Enterprise. | The pricing page lists knowledgebase, alert management, email support, and phone and remote support among support features. |
