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Notion AI reaches 10M users
Slack Huddles update: 4K Video support live
HubSpot pricing adjustment: +5% for Enterprise
Linear introduces Automated Workflows v2
New high-growth AI categories added to StackCompare
Notion AI reaches 10M users
Slack Huddles update: 4K Video support live
HubSpot pricing adjustment: +5% for Enterprise
Linear introduces Automated Workflows v2
New high-growth AI categories added to StackCompare
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Solid Contender

Fastmail

The trusted Email software for scaling companies: Fastmail.

VS
Industry Standard

Postbox

The trusted Email software for scaling companies: Postbox.

50%Fastmail
User Preference Split
50%Postbox
Best Value
Postbox

Starts at $15/mo

Top Rated
Fastmail

4/5 from users

Most Popular
Fastmail

Trusted by 50k+

Disclaimer: Data is indicative. Verify on official sites.

Founder?Claim Dashboard
Founder?Claim Dashboard
Feature
Recommended
Fastmail
Postbox
Feature Score
86
84
REST API Access
SAML/SSO Security
Enterprise
Enterprise
24/7 Priority Support
24/7
Email
iOS/Android App
White-Label Branding

Cost Projection

Based on entry-level paid plans.

10
1 USER500 USERS
Fastmail
$150
EST. MONTHLY
Postbox
$150
EST. MONTHLY

Projected Scaling Costs

Team Size
Fastmail
Postbox
1 Users
$15
$15
10 Users
$150
$150
50 Users
$750
$750
100 Users
$1,500
$1,500

Analysis: Fastmail

$15
Efficiency: 85/100
Cost Efficiency
Pricing vs Value ratio.
4
Sentiment Hub
User satisfaction index.
Provision Fastmail
Free Trial
Provision App
Official implementation.
ValueComplexity
Market Positioning
Market Quadrant
Competitive position.
Verified: 2026
SSL/TLS 1.3
Uptime: 99.9%
API: Ready

Fastmail Pros

  • Streamlined user onboarding.
  • Highly customizable dashboard.

Fastmail Cons

  • Advanced features require premium plans.
  • Smaller community marketplace.

Stack Compatibility Check

Select the tools you already use to see how well Fastmail integrates.

Analysis: Postbox

$15
Efficiency: 78/100
Cost Efficiency
Pricing vs Value ratio.
4
Sentiment Hub
User satisfaction index.
Provision Postbox
Free Trial
Provision App
Official implementation.
ValueComplexity
Market Positioning
Market Quadrant
Competitive position.
Verified: 2026
SSL/TLS 1.3
Uptime: 99.9%
API: Ready
🌍 Market Leader

Postbox Pros

  • Streamlined user onboarding.
  • Highly customizable dashboard.

Postbox Cons

  • Advanced features require premium plans.
  • Legacy UI elements may feel dated.

Stack Compatibility Check

Select the tools you already use to see how well Postbox integrates.

Migration Calculator

Estimate the effort to switch from Fastmail to Postbox.

Based on Email industry avgs
Team Size10 Users
Time to Migrate
15 Hours
Total downtime/setup
Data Export
CSV
Recommended format
Est. Cost
$750
In labor/consulting

StackBot AI

Online • Comparing Fastmail vs Postbox
I've analyzed both Fastmail and Postbox. My advice is AI-generated and for informational purposes only. What specific feature or use-case matters most to you?

Frequently Asked Questions

Deep Dive Reviews

Full Review
Is Fastmail Worth It in 2026?
Full Review
Is Postbox Worth It in 2026?

Related Comparisons

Fastmail vs Postbox
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Community Threads

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