Motorical
One Motor Block per project: transactional email API and SMTP with isolated reputation
About Motorical
Motorical is an EU-hosted email delivery platform for developers that gives every project its own isolated sending stream, called a Motor Block, with separate credentials, auth method, rate limits, delivery logs, webhooks, and reputation score. It covers transactional sending over HTTP API or SMTP relay, bulk campaigns and contact lists on Business plans and above, and hosted MCP servers so AI agents can provision sandboxes, send test mail, and verify domains.
Pros & Cons
Pros
- Per-project reputation isolation is self-serve on every plan, not an enterprise add-on
- Low entry price (€3.60/mo after a 30-day free trial) for 5,000 emails and 3 isolated Motor Blocks
- Agent-native setup through hosted MCP servers with dry-run-by-default sends
- Sandbox lets you send real test mail before configuring DNS
- EU-hosted infrastructure with GDPR compliance
- Flexible per-block auth including OAuth 2.0 and mTLS
Cons
- Young, small vendor with little independent review history
- Campaigns and mailing lists require the Business plan or above
- No permanent free tier; the free period is a 30-day trial for new customers
- Business mailboxes run on a separate service (Gluo) rather than inside Motorical plans
- Prices are in euros only
Key Features
Motor Blocks
Isolated SMTP sending streams per project, staging environment, tenant, or experiment, each with its own credentials, domain, sending rates, logs, webhooks, and reputation score.
Per-block authentication
Each Motor Block picks its own auth method: SMTP password, scoped API keys (mk_live_ for send, ak_live_ for analytics), OAuth 2.0, or mutual TLS.
HTTP send API and SMTP relay
Send via a REST endpoint or SMTP on custom ports, with working code examples for Node.js, Python, PHP, Go, Java, and C#.
Hosted MCP servers
Separate OAuth-secured MCP servers for sending, analytics, domains, sandbox, webhooks, and block management; sends default to a dry run and need explicit confirmation.
Sandbox before DNS
Provision an outbound-locked Motor Block on *.sandbox.motorical.com to send real test mail to an allowlist before owning a domain, then convert it to a verified domain.
Per-project analytics
Reputation, deliverability, provider breakdown, SMTP error codes, anomaly detection, live event stream, and message timelines scoped to one Motor Block.
Domain management
Automated SPF, DKIM, and DMARC setup with ownership verification; detects existing Google Workspace or Microsoft 365 SPF records and merges instead of overwriting.
Bulk sending (Communications Block)
Marketing campaigns, contact lists, and open/click tracking on infrastructure kept separate from transactional streams, included on Business and Professional plans.
Pricing
- Free for 30 days, no payment required (new customers)
- 5,000 emails/month
- 3 SMTP Motor Blocks
- Multiple domains
- API access
- 3 attachments per email, 20MB max
- Basic support (24h)
- 25,000 emails/month
- 6 SMTP Motor Blocks
- Multiple domains
- API access
- 3 attachments per email, 20MB max
- Basic support (12h)
- Campaigns and mailing lists included
- 60,000 emails/month
- 16 SMTP Motor Blocks
- 500 API requests/minute
- 9 attachments per email, 25MB max
- Priority support (6h)
- Communications Block
- Campaigns and mailing lists included
- 150,000 emails/month
- 24 SMTP Motor Blocks
- 1,500 API requests/minute
- 9 attachments per email, 25MB max
- Dedicated support (3h)
- Communications Block
Best For
Separating side projects and client work
Give each app or client its own Motor Block so one sender's spam complaints don't push another project's password-reset emails into spam.
Staging and production isolation
Run staging mail through a separate block with its own credentials, rate limits, and logs so test traffic never touches production reputation.
AI agent email workflows
Let Claude, Cursor, or another MCP client provision a sandbox, send confirmed test messages, and verify a domain without production credentials.
Migrating off SendGrid
Move transactional sending to an EU-hosted provider with a documented SendGrid migration guide and SMTP or HTTP API drop-in options.
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