ClrStream vs MailerSend
ClrStream
mithi.com
MailerSend
mailersend.comSide by side
| Figure | ClrStream | MailerSend |
|---|---|---|
| Price from | — | $7/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| API | Yes | Yes |
| Plans published | 2 | 5 |
| Spec score · Transactional Email Software | 7.5 (#34) | 9.0 (#3) |
| Spec score · Transactional email services | 7.0 (#40) | 8.5 (#15) |
| Compliance | Features include audit trails, policy enforcement, retention, archiving, and auditing for regulated industries. | The company states that EU data centers hold ISO 27001 and ISO 20000 certifications and that MailerSend follows EU-U.S. and Swiss-U.S. Data Privacy Frameworks. |
| Integrations | ClrStream integrates with directory services, Vaultastic, ERP, CRM, core banking, and other business applications through APIs and open protocols. | Official integrations include WordPress, WooCommerce, Firebase, Symfony, React Email, Supabase, Make, NocoDB, Pipedream, Zapier-related tools and others. |
| Support | The maker offers access to a help desk, solution architects, and scheduled product demonstrations. | Official plans provide email support, live chat on higher tiers, priority support and onboarding assistance for Professional customers. |
| What it does | ClrStream is an enterprise email notification platform for automating high-volume customer and stakeholder communications. | MailerSend is a hosted transactional messaging service for sending and tracking email, SMS and WhatsApp messages. |
Plans
MailerSend
- FreeFree
- Hobby$7 a month
- Starter$35 a month
- Professional$110 a month
- EnterprisePriced on request
In their own words
MailerSend
MailerSend delivers transactional email through an email API and SMTP relay. Its editing tools include drag-and-drop, HTML and rich-text editors, along with dynamic templates and split testing. Webhooks, tracking, real-time activity, analytics and suppression-list management support monitoring. Inbound routing can parse replies into application events and route them to an app for further action. Integrations listed include Zapier, Supabase, Firebase, Slack, Laravel, WooCommerce, WordPress, ChatGPT and Claude. The Free plan is free and allows 500 emails per month, 100 daily API requests, one domain and one template. Hobby costs $5.60 a month, billed $67.20 yearly, and includes 5,000 emails per month. The pricing note lists paid plans from $7/mo. A 14-day Professional trial includes 500 emails per month, 100 daily API requests and one day of log retention. MailerSend is available on web, API and iOS; its mobile app is currently only available for iOS. It states that it is GDPR-compliant and hosts services in a certified ISO 27001 data center in Belgium.