# Documentation

- [What is MailerSend?](/): Discover the power of MailerSend's API or seamless email communication. Get started today and take your messaging to the next level.
- [General API resources](/general): Discover the ultimate API resources and authentication guide for MailerSend Developers. Improve your transactional messaging with our powerful API. Get started now.
- [Sending emails with MailerSend SDKs](/sdk): Install a MailerSend SDK, configure your API token, and send your first email in PHP, Node.js, Python, Go, Ruby, or Java.

- **API Reference**
- Email API
  - [Sending an Email](/api/v1/email): Learn how to start sending emails quickly with MailerSend's Email API and comprehensive developers' documentation. Integrate easily and streamline your email communication.
  - [Email personalization](/api/v1/email/features): Add personalization to the subject, HTML and text fields of a template using the Emails API endpoint. Learn how to use personalization variables and their rules.
  - [SMTP relay](/api/v1/email/smtp-relay): Use Simple Mail Transfer Protocol when you want to quickly send emails using a reliable Internet standard. Our SMTP relay service takes care of your email delivery so you don’t have to manage an email server.
  - [Activity](/api/v1/email/activity): Retrieve a list of activities to easily view information about your domain activity including sent emails and their statuses. Learn more with our API documentation.
  - [Analytics](/api/v1/email/analytics): Track the performance of your transactional emails with MailerSend's Analytics API endpoint. Discover opens by country, email activity and more.
  - [Domains](/api/v1/email/domains): Discover how to easily manage your email domains using MailerSend's Domains API endpoint. Get a list of domains or retrieve a single domain in just a few clicks.
  - [Sender Identities](/api/v1/email/sender-identity): Easily manage email sender identities with MailerSend's API. Add, update, delete and retrieve a list of sender identities.
  - [Inbound routing](/api/v1/email/inbound): Easily manage inbound emails with MailerSend's Inbound Routing API endpoint. Retrieve, add, update and delete inbound routes.
  - [Messages](/api/v1/email/messages): Retrieve information about a single email or list of emails with the Messages API endpoint and optimize your processes.
  - [Scheduled messages](/api/v1/email/message-schedules): Keep track of scheduled messages using MailerSend's Scheduled Messages API endpoint. Retrieve and delete scheduled messages with ease.
  - [Recipients](/api/v1/email/recipients): Manage your email recipients with ease using MailerSend's Recipients API. Get, create, update recipients and more with a simple API call. Learn more.
  - [Templates](/api/v1/email/templates): Use the MailerSend Templates API endpoint to easily manage your transactional email templates. Create, fetch, update, and delete single templates or a list of templates.
- Verification
  - [Email Verification](/api/v1/verification/email): Verify a single email address or in bulk with MailerSend's Email Verification API. Create and fetch lists and retrieve your results.
- SMS API
  - [Sending an SMS](/api/v1/sms): Discover how to easily send SMS using MailerSend's SMS API. Start sending SMS today and reach your customers instantly. Learn more now.
  - [Phone numbers](/api/v1/sms/numbers): Get a list of your SMS phone numbers with MailerSend's SMS numbers API endpoint. Learn more about MailerSend's transactional SMS API.
  - [Messages](/api/v1/sms/messages): Discover how to manage your SMS messages with ease using MailerSend's API. Get details for a list of SMS messages or for a specific SMS. Get started.
  - [Activity](/api/v1/sms/activity): Track your messages with the SMS Activity API endpoint. Get a list of activities or view the activity of a single message. Upgrade your communication strategy with MailerSend.
  - [Recipients](/api/v1/sms/recipients): Easily manage SMS recipients with the MailerSend API. Retrieve a list of recipients and their information, and update their status.
  - [Webhooks](/api/v1/sms/webhooks): View available webhook events and create, manage and update webhooks with the SMS Webhooks API endpoint. Receive important notifications and optimize workflows.
  - [Inbound routing](/api/v1/sms/inbounds): Learn how to efficiently create and manage SMS inbound routes with MailerSend's API documentation and the SMS inbounds endpoint.
- Account
  - [Users](/api/v1/account/users): Easily manage users with MailerSend's API. Invite, update, delete and retrieve a list of users in your account.
  - [Tokens](/api/v1/account/tokens): Create and manage API tokens for MailerSend Email API. Securely authenticate and authorize access to your account with ease.
  - [SMTP Users](/api/v1/account/smtp-users): Easily manage SMTP users with MailerSend's API. Add, update, delete and retrieve a list of SMTP users in your account.
  - [Webhooks](/api/v1/account/webhooks): View available webhook events and create, manage and update webhooks with the Webhooks API endpoint. Create triggered workflows and automations.
  - [DMARC Monitoring](/api/v1/account/dmarc-monitoring): Receive and analyze DMARC reports and identify potential sending issues with MailerSend's DMARC Monitoring API. Create and fetch monitors and retrieve your DMARC reports.
  - [Blocklist Monitoring](/api/v1/account/blocklist-monitoring): Monitor your sending domains and IP addresses for blocklist hits with MailerSend's Blocklist Monitoring API. Create and manage monitors, receive notifications, and track blocklist status.

- **Documentation**
- Guides
  - [Get a head start on your integration](/guides): Get started with MailerSend API integration for seamless email communication. Explore our guides and take your transactional email to the next level.

  - **Topics**
  - [Adding Attachments to Emails](/guides/adding-attachments-to-emails): Learn how to add attachments to your emails with MailerSend's easy-to-follow guide. Start sending more engaging emails today.
  - [Customizing Email Content](/guides/customizing-email-content): Learn how to customize your email content with MailerSend's easy-to-follow guide. Increase your email engagement and drive more conversions.
  - [Setting Up Webhooks](/guides/setting-up-webhooks): Learn how to set up webhooks with MailerSend's easy-to-follow guide. Increase your email marketing efficiency and engagement with our webhook feature. Give it a try.
  - [Remediation of Credential Leaks: API Token and SMTP Credentials](/guides/remediation-of-credential-leaks-api-token-and-smtp): In this guide, we'll walk you through the process of remediating MailerSend credential leaks.
  - [Handling Maintenance Modes](/guides/handling-maintenance-modes): Learn how to handle maintenance Modes with MailerSend's easy-to-follow guide.
  - [Email Threads](/guides/creating-email-threads): Learn how to create email threads with MailerSend's easy-to-follow guide. Effectively reply to inbound emails and create a threaded conversation. Give it a try.
  - [Checking your API quota](/guides/checking-api-quota): Inspect how many MailerSend API requests you have remaining and when the limit resets. The quota endpoint does not count toward your own quota.
- Tools
  - [Helpful Tools](/tools): MailerSend is offering various helpful tools to help with a great developer experience.
  - [MailerSend CLI](/tools/cli): Send emails and SMS, manage domains, templates, webhooks, recipients, suppressions, and more from your terminal with the MailerSend CLI.
- MCP Server
  - [MailerSend MCP Server (BETA)](/mcp)
  - [MailerSend MCP Use Cases](/mcp/examples)