Compare Quick Lettertracker vs. SuperMailOS in 2026

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Description

Do you ever drop mail in the corner mailbox and wonder whether it will ever be delivered? You might also send out direct mail campaigns and find that some of your trays have disappeared. It would be amazing if you could track the progress and delivery of your business mail using the USPS system. With Quick Lettertracker, you can! The tracking results from the USPS Informed Viability tracking system are free! Enter an address or just the 5-digit or nine-digit zip code, and Quick Lettertracker will instantly generate a barcode which you can print or copy into a layout. With just one click, you can also standardize your address. To track your mail, click on the mail you have sent to instantly get tracking information. You can view the most recent tracking scan on your screen or print the entire history. You can also track mail you have barcoded using other software by simply entering or pasting your tracking number. It's free for 30 days!

Description

SuperMailOS provides managed business email services on your own domain, specifically designed for small teams. You simply provide your domain while SuperMailOS takes care of the mail server and ensures optimal deliverability through SPF, DKIM, DMARC, IP reputation management, and warmup, guaranteeing that your emails reach the inbox instead of being marked as spam. The setup process is quick and user-friendly; you can verify your domain in seconds using one-click DNS with platforms like Cloudflare and DigitalOcean, or follow simple copy-paste instructions with any registrar, then invite your team members and begin sending emails immediately. Each user receives a genuine mailbox, with the added benefit of unlimited and free aliases, such as hello@ and support@. The webmail interface is designed to be as intuitive as Gmail, featuring threaded conversations, instant search capabilities, keyboard shortcuts, labels, and dark mode, alongside support for IMAP and SMTP, enabling compatibility with any email application. Additionally, SuperMailOS provides a real-time deliverability dashboard to monitor where your emails land. Pricing is straightforward with a flat rate per mailbox: the Pro plan costs $3 per month when billed annually and includes 10 GB of storage and three domains, while the Business plan is priced at $5 per month, offering 30 GB of storage and unlimited domains, along with customizable options for larger teams of 50 or more. A 14-day free trial is available with no credit card required, allowing you to experience the service risk-free.