Resend
Resend is the email API for developers. It provides a modern API for sending transactional emails, managing email templates, and tracking email delivery status with comprehensive analytics.
Overview
Resend gives your bots 28 tools. Paste your own Resend API key once. It is stored encrypted and only your workspace uses it.
Plans and limits
- FreeNot included
- MCP only ($9/mo)2,000 calls a month
- Pro20,000 calls a month
- Max20,000 calls a month
How calls are counted
Calls are shared by every catalog app in the workspace. Past the monthly number they keep working from AI credits at $0.90 per 1,000 calls; the count resets on the 1st (UTC) and a retried call counts once.
Resend questions
How do I connect Resend to Krypton?
Open Integrations in Krypton, find Resend and choose Connect, then paste your API key. Every bot in the workspace can then use it, and you choose which bots get which apps.
Which plan includes Resend?
MCP only with 2,000 calls a month, Pro and Max with 20,000. Calls are shared by every catalog app in the workspace. Past the monthly number they keep working from AI credits at $0.90 per 1,000 calls; the count resets on the 1st (UTC) and a retried call counts once.
Can I use Resend from Claude or Cursor?
Yes. Connect it in your workspace, then add https://mcp.krypton.bot as a streamable HTTP MCP server with your kmcp_ workspace key. Calls count toward the same monthly number.
Tools
28 tools your bot can call in Resend. It asks before anything hard to undo.
- Create api keyAdd a new API key to authenticate communications with Resend
- Create audienceCreate a list of contacts
- Create broadcastCreate a new broadcast to send to your audience
- Create contactAdd a contact to an audience
- Create domainAdd a domain to your Resend account
- Delete api keyRemove an existing API key
- Delete audienceRemove an existing audience
- Delete broadcastDelete a broadcast
- Delete contactRemove an existing contact
- Delete domainDelete a domain
- List api keysRetrieve a list of API keys for the authenticated user
- List audiencesRetrieve a list of audiences
- List broadcastsReturns a list of your broadcasts
- List contactsReturns a list of contacts for an audience
- List domainsReturns a list of your domains
- Retrieve audienceRetrieve a single audience
- Retrieve broadcastRetrieve a single broadcast
- Retrieve contactRetrieve a single contact
- Retrieve domainRetrieve a single domain
- Send batch emailsTrigger up to 100 batch emails at once
- Send broadcastStart sending broadcasts to your audience through the Resend API
- Send emailStart sending emails through the Resend Email API
- Update contactUpdate a contact
- Update domainUpdate a domain
- Update emailUpdate a scheduled email
- Cancel emailCancel a scheduled email
- Retrive emailRetrieve a single email
- Verify domainVerify a domain
- GmailRead, search, label, draft and send email with a Google app password.App passwordFree, no limits
- XSearch posts, read timelines, pull trends, explore Spaces and communities, manage lists and bookmarks, access X Chat, schedule X calls, and manage livestreams.Sign inMCP plan and up
- OneSignalOneSignal is a comprehensive customer engagement solution that provides push notifications, in-app messaging, email, and SMS services. This integration enables managing and sending cross-platform notifications, tracking user engagement, and accessing notification analytics.API keyMCP plan and up
- SendGridSendGrid is a cloud-based email service that delivers transactional and marketing emails. It provides a robust API for sending emails, managing email templates, and tracking email delivery status.API keyMCP plan and up
