Best Mailjet Email Delivery Phone Validation API & Email Verification Integration 2025

// Advanced delivery optimization with reputation protection
const optimizeEmailDelivery = async (emailBatch, campaignType) => {
  // Step 1: Batch validation with delivery intelligence
  const validationResults = await Promise.all(
    emailBatch.map(email => validator.validateEmail(email.recipient, {
      include_deliverability_prediction: true,
      include_reputation_analysis: true,
      include_isp_specific_data: true,
      campaign_type: campaignType
    }))
  );
  
  // Step 2: Analyze current sender reputation
  const reputationStatus = await getSenderReputation();
  
  // Step 3: Create delivery optimization strategy
  const deliveryStrategy = {
    premium_queue: [],
    standard_queue: [],
    throttled_queue: [],
    suppressed: [],
    reputation_protection_mode: reputationStatus.score < 7.5
  };
  
  // Step 4: Categorize emails based on validation and reputation
  emailBatch.forEach((email, index) => {
    const validation = validationResults[index];
    const deliveryScore = validation.deliverability_prediction.score;
    const riskLevel = validation.reputation_analysis.risk_level;
    
    // Advanced delivery logic
    if (validation.is_valid && deliveryScore >= 90 && riskLevel === 'low') {
      deliveryStrategy.premium_queue.push({
        ...email,
        send_time: 'immediate',
        ip_pool: 'premium',
        tracking_level: 'enhanced'
      });
    } else if (validation.is_valid && deliveryScore >= 75) {
      deliveryStrategy.standard_queue.push({
        ...email,
        send_time: calculateOptimalSendTime(validation),
        ip_pool: 'standard',
        tracking_level: 'normal'
      });
    } else if (validation.is_valid && deliveryScore >= 60) {
      deliveryStrategy.throttled_queue.push({
        ...email,
        send_time: 'delayed',
        throttle_rate: calculateThrottleRate(reputationStatus),
        ip_pool: 'careful',
        tracking_level: 'enhanced'
      });
    } else {
      deliveryStrategy.suppressed.push({
        ...email,
        reason: validation.is_valid ? 'Low deliverability score' : 'Invalid email',
        recommendation: generateSuppressionRecommendation(validation)
      });
    }
  });
  
  // Step 5: Execute delivery with advanced monitoring
  const deliveryResults = await executeAdvancedDelivery(deliveryStrategy);
  
  // Step 6: Update reputation tracking
  await updateReputationMetrics(deliveryResults, validationResults);
  
  return {
    deliveryStrategy,
    deliveryResults,
    reputationImpact: calculateReputationImpact(deliveryResults),
    recommendations: generateDeliveryRecommendations(deliveryStrategy)
  };
};