Contact Form Mail Setup

smtp.office365.com:587

// Send via Microsoft Graph API
const graphResponse = await fetch(
  'https://graph.microsoft.com/v1.0/users/{sender-email}/sendMail',
  {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${accessToken}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      message: {
        subject: `New Contact Form Submission from ${data.name}`,
        body: {
          contentType: 'Text',
          content: formatMessage(data),
        },
        toRecipients: [
          { emailAddress: { address: env.TO_EMAIL } },
        ],
      },
    }),
  }
);

async function getMsGraphToken(env: Env): Promise<string> {
  const tokenUrl = `https://login.microsoftonline.com/${env.MS_TENANT_ID}/oauth2/v2.0/token`;

  const response = await fetch(tokenUrl, {
    method: 'POST',
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    body: new URLSearchParams({
      client_id: env.MS_CLIENT_ID,
      client_secret: env.MS_CLIENT_SECRET,
      scope: 'https://graph.microsoft.com/.default',
      grant_type: 'client_credentials',
    }),
  });

  const data = await response.json();
  return data.access_token;
}

async function sendViaSes(data: ContactFormData, env: Env): Promise<{ success: boolean }> {
  const region = env.AWS_REGION || 'eu-west-1';
  const endpoint = `https://email.${region}.amazonaws.com/v2/email/outbound-emails`;

  const body = JSON.stringify({
    Content: {
      Simple: {
        Subject: { Data: `New Contact Form Submission from ${data.name}` },
        Body: {
          Text: { Data: formatMessage(data) },
        },
      },
    },
    Destination: {
      ToAddresses: [env.TO_EMAIL],
    },
    FromEmailAddress: env.FROM_EMAIL,
    ReplyToAddresses: [data.email],
  });

  // Sign the request with AWS Signature V4
  // (use a library like aws4fetch for Cloudflare Workers)
  const response = await signedFetch(endpoint, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body,
  }, env);

  return { success: response.ok };
}