Function generateUnsubscribeToken

apps/sim/lib/messaging/email/unsubscribe.ts:22–27

(email: string, emailType = 'marketing')

 * Generate a secure unsubscribe token for an email address
 */
export function generateUnsubscribeToken(email: string, emailType = 'marketing'): string {
  const salt = randomBytes(16).toString('hex')
  const hash = sha256Hex(`${email}:${salt}:${emailType}:${env.BETTER_AUTH_SECRET}`)

  return `${salt}:${hash}:${emailType}`
}

/**
 * Verify an unsubscribe token for an email address and return email type