See why high-volume senders choose SendPost for advanced deliverability, automation, and control that Postmark can’t match.
Postmark caps sending at around 5M emails per month per account. For serious high-volume senders, this means splitting accounts or outgrowing the platform. SendPost is built to scale without limits.
Postmark’s transparent, flat pricing is great for smaller senders, but it becomes expensive as volume increases. SendPost delivers more advanced deliverability features with lower total cost of ownership at scale, making it the smarter long-term choice for high-volume email programs.
Postmark is reliable but offers only basic bounce handling and reputation visibility. SendPost delivers advanced IP pool management, domain reputation tracking, and SMTP error intelligence out of the box.
Our entire platform, from our advanced infrastructure to our expert support, is built to ensure your emails reach the inbox, not the spam folder.
Go beyond basic metrics. Get deep analytics, proactive alerts, and a full Deliverability CRM out of the box to quickly diagnose and fix issues.
Clean APIs, extensive SDKs, and powerful webhooks supported by 24/7 expert assistance to help you build and scale faster.
Here's a summary and non-biased comparison between SendPost and Postmark
Reliable infrastructure to send and manage millions of emails.
Organize and isolate email streams across teams or clients.
Track performance and troubleshoot issues with deep insights.
Stay ahead of problems with real-time monitoring.
Optimize how emails are delivered.
Everything you need to know about SendX and email marketing
Yes. Both platforms handle transactional and marketing email delivery, but SendPost is designed for larger senders who need more deliverability control, automation, and scalability. If you’ve outgrown Postmark’s limits, or feel like you are overpaying, SendPost is the natural next step.
Postmark’s transparent pricing works well for smaller senders, but it gets expensive at scale and lacks advanced deliverability tooling. SendPost requires a higher initial commitment, but it includes IP pool management, AI-driven automation, and real-time deliverability monitoring out of the box, delivering a lower total cost of ownership at scale.
SendPost is built for high-volume, revenue-focused senders, ESPs, eCommerce brands and SaaS platforms that rely on inbox placement as a growth driver. If email is mission-critical to your business, SendPost provides the infrastructure and insights Postmark doesn’t.
We specialize in the high-speed, reliable delivery of transactional emails. Our infrastructure is built on managed IP pools with proactive monitoring to protect sender reputation. Unlike bulk marketing platforms, our systems are optimized to ensure your critical emails—like password resets, invoices, and alerts—reach the inbox instantly.
SendPost is significantly more cost-effective for transactional and high-volume email. Our pay-as-you-go pricing is tied directly to your usage, not your subscriber count. This means you don't overpay for storing contacts and only get charged for the emails you actually send, making it a more economical and scalable solution for applications.
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