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SparkPost

API500 emails/month for testing

Enterprise-grade email with advanced analytics and optimization.

Best For
Enterprise users needing advanced analytics and scale
Pricing
Starter from $20/month for 50K emails
Integration Type
API

Overview

SparkPost is an enterprise email delivery service that powers 37% of the world's business-to-consumer email. Used by companies like Pinterest, LinkedIn, and Twitter, SparkPost offers advanced analytics, predictive deliverability, and unmatched scale.

Authority Mailer SMTP integration brings SparkPost's enterprise features to WordPress without complex coding.

SparkPost Features

Enterprise-grade infrastructure
Advanced real-time analytics
Predictive deliverability insights
A/B testing built-in
Dedicated IPs available
Email validation API
Webhook support for all events
Engagement tracking
Suppression list management
99.9% uptime SLA

Requirements

Before you start, make sure you have:

  • 1SparkPost account
  • 2API key with transmissions permission
  • 3Verified sending domain

Step-by-Step Setup Guide

1

Create a SparkPost Account

1. Go to sparkpost.com and click "Start For Free"

2. Enter your details and create an account

3. Verify your email address

4. Complete the onboarding process

2

Add and Verify Your Domain

1. Go to Sending Domains

2. Click "Add a Domain"

3. Enter your domain (e.g., mail.yoursite.com)

4. Add the provided DNS records:

- DKIM (TXT record)

- Verify ownership (TXT or CNAME)

5. Click "Verify Domain"

3

Create an API Key

1. Go to Account → API Keys

2. Click "Create API Key"

3. Name it "Authority Mailer SMTP"

4. Enable "Send via SMTP" or "Transmissions: Read/Write"

5. Save the API key securely

4

Configure Authority Mailer SMTP

1. In WordPress, go to Authority Mailer SMTP → Settings

2. Select "SparkPost" from the provider dropdown

3. Paste your API key

4. Set your "From Email" (must be @verified domain)

5. Set your "From Name"

6. Save and send a test email

💡 Pro Tips

  • Use the deliverability insights to optimize send times
  • Set up subaccounts for multi-tenant applications
  • Use templates for consistent transactional emails
  • Monitor engagement metrics to maintain reputation
  • Consider dedicated IPs for high-volume sending

🔧 Troubleshooting

❓ Authorization failed

✅ Verify your API key has Transmissions permission. Create a new key if needed.

❓ Domain not verified

✅ Check your DNS records. SparkPost provides specific records that must match exactly.

❓ Account suspended

✅ SparkPost has strict anti-spam policies. Contact their support for reinstatement.

❓ Hitting rate limits

✅ Free tier has limited sending. Upgrade your plan for higher throughput.

Ready to Set Up SparkPost?

Get Authority Mailer SMTP and start sending reliable emails in minutes.

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