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Interactive Team Savings Calculator
Adjust your team size to estimate monthly and annual cost differences.
Note: Pricing calculates base published tiers with per-seat adjustments where applicable.
Direct Feature Comparison
Detailed side-by-side capabilities and infrastructure support.
| Feature Specification | Mailspring | Postal |
|---|---|---|
| Flat-Rate Small Business Pricing pricing | Supported No per-seat enterprise lock-in | Supported No per-seat enterprise lock-in |
| Full API & Webhooks developer | Supported Open API & webhooks | Supported Open API & webhooks |
| Self-Hostable / Open Source infrastructure | Supported Open Source (GPL-3) self-hostable | Supported Open Source (MIT) self-hostable |
Verified Pricing Breakdown
Official published tiers for Mailspring and Postal.
Mailspring Plans Verified
Open Source / Self-Hosted
monthly
Managed Cloud Pro
monthly
Postal Plans Verified
Open Source / Self-Hosted
monthly
Managed Cloud Pro
monthly
Frequently Asked Questions
Key differences and migration facts small business owners and founders ask about.
What is the main difference between Mailspring and Postal?
Mailspring is an independent, agility-focused tool that emphasizes "Alternative to Apple Mail, Microsoft Outlook, Spark Mail — Desktop email client for Mac, Windows, and Linux with unified", whereas Postal is an agile indie solution designed around "Alternative to Resend, SendGrid, Mailgun — Run your own mail delivery infrastructure with a web interface, webhooks, IP".
Which is more affordable: Mailspring or Postal?
Pricing depends on your team structure. Mailspring offers pricing starting at $0, while Postal starts at $0. For small businesses and growing teams, agile tools typically reduce total expenditure by 60% to 80%.
Does Mailspring offer a free tier?
Yes, Mailspring provides a free tier or free plan for small businesses, teams, and solo founders.
Why do small businesses and SaaS founders switch from Postal to Mailspring?
Teams switch to Mailspring to eliminate enterprise seat bloat, gain faster workflow speed, benefit from transparent pricing without sales calls, and maintain full data ownership.
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