EmailSuccess vs Nuntly
EmailSuccess
emailsuccess.com
Nuntly
nuntly.comSide by side
| Figure | EmailSuccess | Nuntly |
|---|---|---|
| Price from | €333.33/mo | €10/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 4 | 5 |
| Spec score · Transactional Email Software | 9.4 (#1) | 8.8 (#5) |
| Spec score · Transactional email services | 9.1 (#4) | 8.8 (#6) |
| Dedicated IP option | Yes | Dedicated IPs are available as an add-on on paid plans shown in the comparison. |
| Delivery methods | both | both |
| Event webhooks | Yes | Yes |
| Free plan | Yes | Yes |
| Headquarters | The listed headquarters are in Faenza, Ravenna, Italy, with offices also reported in Milan, Bologna and Paris. | Châtillon, France |
| Integrations | Listed technology integrations include Splunk, Elastic, Kafka, Pravega, HerdDB, Rspamd, Ongage, BlackBox and MySQL. | Nuntly integrates with AI agents through structured JSON, thread context, agent memory, and a Reply API. |
| Support | The Free plan lists community forum support, while Standard and Enterprise list individual support. | The pricing page lists email support for Free and Starter, email plus Slack support for Scale, and priority support for Enterprise. |
| What it does | EmailSuccess is an on-premises mail-transfer agent for enterprise gateways and high-volume SMTP sending. | Nuntly is a developer-first email platform for sending, receiving, replying to, tracking, and debugging transactional email through one REST API. |
Plans
Nuntly
- FreeFree
- Starter€10 a month
- Scale€68 a month
- EnterprisePriced on request
- FreeFree
In their own words
EmailSuccess
EmailSuccess is an on-premises mail transfer agent for enterprise email gateways and high-volume SMTP servers. It manages outbound delivery, sending reputation, and changing authentication requirements. Its deliverability engine analyzes ISP responses and adjusts delivery settings in real time. Flexible queues, multiple IP pools, and connection pooling support high-volume sending and traffic prioritization. Authentication features include DKIM signing, DMARC compliance, and SPF and SenderID monitoring; TLS delivery encryption can be governed by configurable rules. The product classifies and reports bounces and feedback loops, and can forward ISP spam complaints to another system. Sending and message analysis are supported through SMTP, input scripting and filtering, and REST and SOAP APIs. Management tools include VirtualMTA traffic segmentation, an SSH console, and a web interface for monitoring and message history. The Free plan costs nothing, billed annually, and lists 100,000 emails per day and two active IPs.
Nuntly
Nuntly is a developer-focused email platform for sending and receiving transactional email, replying to messages, and tracking activity through one REST API. It supports single or bulk sends, scheduled or immediate delivery, and messages with or without templates. For inbound email, it provides custom inboxes, stored messages, thread grouping, attachment access, webhooks, and a Reply API. The REST API covers domains, API keys, webhooks, analytics, sending, receiving, and team members; documented SDKs include TypeScript and Java. Webhooks expose delivery, open, click, bounce, complaint, and inbound-message activity, with retries, replay, filtering, payload inspection, and signature verification. Logs are retained for up to 30 days. Nuntly says data is encrypted in transit and at rest, and hosted and processed in Europe by default. Its Free plan requires no card and costs nothing; it allows 3,000 emails monthly, 100 daily, one domain, and one inbox. Starter costs €10 a month and allows up to 10,000 emails monthly. Nuntly is headquartered in Châtillon, France.