ClrStream vs Nuntly
ClrStream
mithi.com
Nuntly
nuntly.comSide by side
| Figure | ClrStream | Nuntly |
|---|---|---|
| Price from | — | €10/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 2 | 5 |
| Spec score · Transactional Email Software | 7.5 (#34) | 8.8 (#5) |
| Spec score · Transactional email services | 7.0 (#40) | 8.8 (#6) |
| Delivery methods | both | both |
| Integrations | ClrStream integrates with directory services, Vaultastic, ERP, CRM, core banking, and other business applications through APIs and open protocols. | Nuntly integrates with AI agents through structured JSON, thread context, agent memory, and a Reply API. |
| Security | The maker describes spam, virus, and malware protection with a 7-layer security architecture and real-time threat mitigation. | Nuntly states that data is encrypted at rest with AES-256 and in transit with TLS 1.3, with API keys hashed or encrypted and rotatable without downtime. |
| Support | The maker offers access to a help desk, solution architects, and scheduled product demonstrations. | The pricing page lists email support for Free and Starter, email plus Slack support for Scale, and priority support for Enterprise. |
| What it does | ClrStream is an enterprise email notification platform for automating high-volume customer and stakeholder communications. | 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
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.