diff --git a/jsconfig.json b/jsconfig.json
index d15c7ca..ed4318a 100644
--- a/jsconfig.json
+++ b/jsconfig.json
@@ -6,8 +6,8 @@
     "lib": ["es2016"],
     // silences wrong TS error, we don't compile, we only typecheck
     "outDir": "./irrelevant/unused",
-    "allowJs": true,
-    "checkJs": true,
+    // "allowJs": true,
+    // "checkJs": true,
     "noImplicitThis": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
diff --git a/lib/private/mail/send.js b/lib/private/mail/send.js
index 02727a9..0446157 100644
--- a/lib/private/mail/send.js
+++ b/lib/private/mail/send.js
@@ -79,7 +79,8 @@ module.exports = {
         'An override for the default "from" email that\'s been configured.',
       example: 'anne.martin@example.com',
       isEmail: true,
-      defaultsTo: sails.config.mail.from.address || process.env.MAIL_FROM_ADDRESS
+      defaultsTo:
+        sails.config.mail.from.address || process.env.MAIL_FROM_ADDRESS
     },
 
     fromName: {
@@ -91,7 +92,7 @@ module.exports = {
     replyTo: {
       description: 'An email address that will appear on the Reply-To: field',
       example: 'example@example.com',
-      defaultsTo: sails.config.mail.replyTo || process.env.MAIL_REPLY_TO      
+      defaultsTo: sails.config.mail.replyTo || process.env.MAIL_REPLY_TO
     },
 
     layout: {
@@ -111,6 +112,28 @@ module.exports = {
     },
     text: {
       example: 'Hello world'
+    },
+    // Mailtrap transport specific options
+    templateUuid: {
+      type: 'string',
+      description: 'The UUID of the template to use.'
+    },
+    templateVariables: {
+      type: 'ref',
+      description: 'An object with the variables to use in the template.'
+    },
+    category: {
+      type: 'string',
+      description: 'The category of the email.'
+    },
+    customVariables: {
+      type: 'ref',
+      description: 'An object with the custom variables to use in the email.'
+    },
+    testInboxId: {
+      type: 'string',
+      description: 'The ID of the test inbox to use.',
+      defaultsTo: process.env.MAILTRAP_TEST_INBOX_ID
     }
   },
 
@@ -133,7 +156,13 @@ module.exports = {
     text,
     cc,
     bcc,
-    attachments
+    attachments,
+    // Mailtrap transport specific options
+    templateUuid,
+    templateVariables,
+    category,
+    customVariables,
+    testInboxId
   }) {
     if (template && !template.startsWith('email-')) {
       sails.log.warn(
@@ -227,6 +256,43 @@ module.exports = {
         })
         sails.log.debug('Email sent: %s', smtpInfo.messageId)
         break
+      case 'mailtrap':
+        const { MailtrapClient } = getModule('mailtrap')
+        testInboxId = testInboxId
+          ? testInboxId
+          : sails.config.mail.mailers[mailer]?.testInboxId
+        const mailtrapClientOptions = {
+          token:
+            sails.config.mail.mailers[mailer]?.token ||
+            process.env.MAILTRAP_TOKEN,
+          testInboxId,
+          accountId:
+            sails.config.mail.mailers[mailer]?.accountId ||
+            process.env.MAILTRAP_ACCOUNT_ID
+        }
+        const mailtrap = new MailtrapClient({ ...mailtrapClientOptions })
+        const mail = {
+          category,
+          from: { name: fromName, email: fromAddress },
+          to: [{ email: to }],
+          subject,
+          text,
+          html,
+          attachments,
+          template_uuid: templateUuid,
+          template_variables: templateVariables,
+          custom_variables: customVariables
+        }
+        let mailtrapInfo
+        if (testInboxId) {
+          mailtrapInfo = await mailtrap.testing.send({ ...mail })
+        } else {
+          mailtrapInfo = await mailtrap.send({ ...mail })
+        }
+
+        mailtrapInfo = await mailtrap.send({ ...mail })
+        sails.log.debug('Email sent: %s', mailtrapInfo.message_ids.join(', '))
+        break
       case 'resend':
         const { Resend } = getModule('resend')
         const apiKey =
diff --git a/types/index.d.ts b/types/index.d.ts
deleted file mode 100644
index 7284d31..0000000
--- a/types/index.d.ts
+++ /dev/null
@@ -1,72 +0,0 @@
-interface Sails {
-  log: LogMethod & LogObject
-  helpers: Helper
-  on(event: string, listener: (...args: any[]) => void): void
-  off(event: string, listener: (...args: any[]) => void): void
-  emit(event: string, ...args: any[]): void
-  lift(cb?: (err: Error, sails: Sails) => void): Sails
-  lower(cb?: (err?: Error) => void): void
-  load(): Sails
-  config: Config
-  renderView: (
-    relPathToView: string,
-    _options: Dictionary,
-    optionalCb?: (err: Error | null, compiledHtml: string) => void
-  ) => Sails & Promise<string>
-  intercept(callback: (err: Error) => Error): Sails & Promise<string>
-}
-
-interface Helper {
-  mail: {
-    send: {
-      with: (params: EmailParams) => Promise<string>
-    }
-  }
-}
-interface EmailParams {
-  mailer?: string
-  to: string
-  subject?: string
-  template?: string
-  templateData?: object
-}
-
-interface Hook {
-  inertia: Inertia
-}
-interface LogMethod {
-  (...args: any[]): void
-}
-
-interface LogObject {
-  info: LogMethod
-  warn: LogMethod
-  error: LogMethod
-  debug: LogMethod
-  silly: LogMethod
-  verbose: LogMethod
-}
-
-interface Config {
-  mailer: string
-  mail: {
-    default: string
-    mailers: {
-      log: object
-      smtp: {
-        transport: 'smtp'
-        host: string
-        port: number
-        encryption: 'tls' | 'ssl'
-        username?: string
-        password?: string
-      }
-    }
-    from: {
-      name: string
-      address: string
-    }
-  }
-}
-
-declare const sails: Sails