Mailyond
VisitOne email inbox for all your domains, plus a send API for your app.
Mailyond introduction
Mailyond provides a single inbox for email across multiple domains, letting users read and reply from the address the mail arrived at. It also offers a send API for transactional email from apps, with one DNS setup per domain and no per-inbox pricing.
- Website:
- mailyond.com
Mailyond overview
Mailyond is built for founders running more than one product or domain. Mail for all connected domains lands in one color-tagged inbox, and replies go out from the address the mail arrived at, with threads, reply all, and forward supported. Users can keep their existing personal inbox and point a subdomain such as support.yourdomain.com at Mailyond, or run a whole domain through the service. Setup involves adding three DNS records (DKIM, Return-Path, and MX) and verifying, which the site says takes about 5 minutes. Sending from an app uses one POST to the API with a workspace key, and the service says it uses the same API as Resend, so the Resend SDK can be pointed at Mailyond's endpoint. An MCP server allows agents such as Claude Code or Grok Bot to read the inbox across connected domains and reply in-thread using the same API key. Pricing includes a Basic plan at $10/month for up to 5 domains and 3,000 emails/month, and an Agency plan at $40/month for up to 30 domains and 15,000 emails/month, both with overage rates and no per-inbox pricing.
Mailyond features
- One inbox for mail from all connected domains
- Color tagging to identify which project or domain a message came from
- Reply from the address the mail arrived at
- Threads, reply all, and forward support
- Send transactional mail from an app with one POST
- One API key per workspace
- Same API as Resend, so the Resend SDK can be pointed at Mailyond
- MCP server for agent access to the inbox
- Agent tools include list_conversations, get_conversation, reply_to_conversation, send_email, and list_domains
- One DNS setup per domain using DKIM, Return-Path, and MX records
- Keep your existing personal inbox and point a subdomain at Mailyond
- API keys can be locked to a single domain
Questions about Mailyond
Mailyond pros
- One inbox for all domains, color tagged by project
- Replies go out from the address the mail arrived at
- One DNS setup per domain
- No per-inbox pricing
- Send API uses the same API as Resend
- MCP server allows agent access with the same API key
- Existing personal inbox can stay in place by pointing a subdomain at Mailyond
- Overage can be enabled with a user-set spend cap on Basic
Mailyond limitations
- Basic plan is limited to a single user
- Agency plan supports up to 10 workspace members
- Email volume is capped by plan, with overage or plan changes required beyond the cap
- Messages past the cap stay locked until overage is enabled or the plan is changed
- Sending pauses when the cap is reached until overage is enabled or the period resets
Mailyond use cases
- Managing support email for multiple products or domains in one place
- Replying to customer threads as the correct brand address
- Sending transactional email from an application
- Letting an AI agent read and reply to support mail
- Keeping a personal inbox separate while handling support on a subdomain
- Running a whole domain's email through Mailyond
- Consolidating sending and receiving for multiple domains on one bill
- Using the Resend SDK with Mailyond's API endpoint
Who Mailyond is for
- Founders running more than one product
- Developers sending transactional email from apps
- Small teams managing support across multiple domains
- Users who want agent-based email handling
Mailyond pricing
Basic is $10/month for up to 5 domains and 3,000 emails/month, with extra emails at $1.80 per 1,000. Agency is $40/month for up to 30 domains and 15,000 emails/month, with extra emails at $1.30 per 1,000. Both plans have no per-inbox pricing and offer a 7-day free trial. Custom plans are available by contacting the company.
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