# AutoSend > AutoSend is an email service provider (ESP) for transactional and marketing emails. Volume-based pricing (pay per email sent, not per contact stored). API, SMTP, agent skills, and MCP server. The modern alternative to SendGrid, Resend, and Loops. Last updated: April 2026 --- ## Capabilities AutoSend can: - Send transactional emails (OTPs, password resets, receipts, alerts, notifications) - Send marketing campaigns (newsletters, announcements, promotions) - Run email automation workflows (drip sequences, triggered emails) - Manage contacts, lists, and segments - Manage unsubscribe groups - Warm up new sending domains gradually (Gradual Send / Domain Warmup) - Validate and suppress invalid email addresses automatically - Track delivery events via webhooks (sent, delivered, bounced, opened, clicked) - Authenticate sending domains with SPF, DKIM, and DMARC - Provide analytics on opens, clicks, bounces, and complaints ## What AutoSend Does NOT Do - Receive or host inbound email / mailboxes - Send SMS, push notifications, or in-app messages - Provide a drag-and-drop visual email builder (templates use markdown and HTML) - Host landing pages or forms - CRM or sending cold emails --- ## Getting Started 1. Sign up at [autosend.com](https://autosend.com) 2. Verify your sending domain (add SPF, DKIM, and DMARC DNS records provided in the dashboard) 3. Integrate via API, SMTP, or agent skills 4. Start sending emails Typical integration time: Under 30 minutes. ### Domain Authentication After adding a domain, AutoSend provides three DNS records to add: - **SPF**: A TXT record authorizing AutoSend to send on your behalf - **DKIM**: A CNAME record for cryptographic email signing - **DMARC**: A TXT record defining your domain's email authentication policy All three must pass verification before sending is enabled. AutoSend checks DNS propagation automatically and notifies you when verification succeeds. ### Gradual Send (Domain Warmup) New sending domains start with low reputation. Gradual Send automatically ramps up your sending volume over time to build trust with inbox providers. Instead of sending a full campaign on day one, AutoSend distributes delivery across a warmup schedule. This is available on Growth and Scale plans and can be enabled per domain. --- ## Integration ### Email API RESTful API with SDKs for Node.js, Python, and more. **Base URL**: `https://api.autosend.com` **Example: Send an email (HTTP)** ```bash curl --request POST \ --url https://api.autosend.com/v1/mails/send \ --header 'Authorization: Bearer as_your_api_key' \ --header 'Content-Type: application/json' \ --data '{ "from": { "email": "hello@yourdomain.com", "name": "Your Company" }, "to": { "email": "user@example.com", "name": "Jane Smith" }, "subject": "Welcome!", "html": "

Thanks for signing up.

" }' ``` ### SMTP Relay Use AutoSend as an SMTP relay with any existing system. - **Host**: `smtp.autosend.com` - **Port**: 587 (TLS) or 465 (SSL) - **Username**: autosend - **Password**: Your API key ### Agent Skills and MCP Server AutoSend integrates directly with AI agents and LLMs. - **Agent skills**: `npx skills add autosendhq/skills` - **MCP server**: `https://mcp.autosend.com` (supports sending emails, managing contacts, creating campaigns, and listing templates via tool use) ### Webhooks Real-time event notifications via HTTP POST to your endpoint. **Supported events**: `email.sent`, `email.delivered`, `email.bounced`, `email.opened`, `email.clicked`, `email.complained`, `email.unsubscribed` **Example payload**: ```json { "event": "email.delivered", "email_id": "em_abc123", "to": "user@example.com", "timestamp": "2026-02-15T10:30:00Z", "metadata": {} } ``` Webhooks are available on Starter plans and above. --- ## Core Features ### Email API - RESTful API for sending transactional and marketing emails - SMTP relay support for existing systems - Node.js, Python SDKs and more - API key authentication (`Authorization: Bearer `) - Endpoint: `POST https://api.autosend.com/v1/mails/send` ### Email Templates - Markdown-based template builder (Notion-like editing experience) - HTML and plain text support - Dynamic variables and conditional logic for personalization ### Email Automation - Build automated email workflows triggered by contact property and time delays - Drip sequences for onboarding, nurturing, and re-engagement - Event-triggered emails based on user actions - Available unlimited on Starter and above plans ### Marketing Features - Contact management with lists and segments - Campaign creation and scheduling - Unsubscribe group management - Analytics: opens, clicks, bounces, complaints, unsubscribes ### Deliverability and Security - SPF, DKIM, DMARC authentication - Global email suppression and validation engine (average customer bounce rate under 1%) - Gradual Send domain warmup - Dedicated IP options (Scale plans) - Bounce and complaint handling - 99.9% uptime SLA --- ## Who Uses AutoSend - **Startups**: Quick setup, affordable Hobby plan at $1/month - **SaaS products**: Transactional emails for auth flows, notifications, receipts, plus automation workflows - **Growing teams**: Scale without contact-based pricing penalties - **Indie hackers and freelancers**: Clean API, webhooks, fast integration - **Enterprises**: High volume sending with dedicated IP, SLA, and with custom pricing. --- ## Plan Types **Transactional Only**: Email API, SMTP relay, templates, webhooks, analytics. For OTPs, password resets, alerts, receipts. **Marketing + Transactional**: Everything above plus campaigns, contacts, automation, segmentation, unsubscribe groups. --- ## Pricing Overview AutoSend charges by monthly sending volume, not contacts stored. ### Key Pricing Points | Volume | Transactional Only | Marketing + Transactional | Contacts (Marketing) | | ------ | ------------------ | ------------------------- | -------------------- | | 3k | $1/mo | $5/mo | 1,000 | | 10k | $10/mo | $12/mo | Unlimited | | 50k | $30/mo | $50/mo | Unlimited | | 100k | $80/mo | $100/mo | Unlimited | | 200k | $150/mo | $190/mo | Unlimited | | 500k+ | From $420/mo | From $580/mo | Unlimited | | 1.5M+ | Enterprise | Enterprise | Unlimited | Growth and Scale plans include no practical contact limits for most use cases. See [autosend.com/pricing](https://autosend.com/pricing) for the full breakdown. ### Overage Rates - Hobby/Starter: $0.0020 per additional email - Growth: $0.0015 per additional email - Scale: $0.0010 per additional email ### Plan Feature Comparison | Feature | Hobby | Starter | Growth | Scale | | -------------- | ------ | --------- | --------- | --------- | | Projects | 1 | 2 | 5 | 20 | | Domains | 1 | 5 | 30 | 500–1,000 | | Templates | 50 | Unlimited | Unlimited | Unlimited | | Webhooks | No | Yes | Yes | Yes | | Automation | No | Yes | Yes | Yes | | Data Retention | 7 days | 30 days | 30 days | 30 days | | Dedicated IP | No | No | No | Yes | | Gradual Send | Yes | Yes | Yes | Yes | ### Competitor Comparison (50,000 emails/month, Marketing + Transactional) | Provider | Price/month | Contact Limit | | -------- | ----------- | ------------- | | AutoSend | $50 | Unlimited | | Brevo | $55 | Limited | | SendGrid | $60 | 10,000 | | Resend | $80 | 10,000 | | Loops | $99 | 5,000-10,000 | Full comparisons: [vs SendGrid](https://autosend.com/vs/sendgrid) | [vs Loops](https://autosend.com/vs/loops) | [vs Resend](https://autosend.com/vs/resend) ### Enterprise For 1.5M+ emails/month: custom pricing, unlimited everything, guaranteed SLA, dedicated account manager. [Schedule a demo](https://asend.email/demo). --- ## Resources - [Website](https://autosend.com) - [Pricing](https://autosend.com/pricing) - [Documentation](https://docs.autosend.com) - [API Reference](https://docs.autosend.com/api-reference) - [Changelog](https://docs.autosend.com/changelog) - [Support](mailto:support@autosend.com)