What’s the difference between free and enterprise deliverability tools?

Free versus enterprise tool comparison:

Free tools (MXToolbox, Postmaster, mail-tester):

Basic functionality

Manual checks

Limited history

No automation

Sufficient for basic needs

Enterprise tools:

Automated monitoring

Historical data and trends

Panel data for inbox placement

Dedicated support

Integration with workflows

API access

When to upgrade:

High volume sending

Complex infrastructure

Need for automation

Compliance requirements

Dedicated deliverability team

Basic tools work for small operations. Enterprise scale requires enterprise tools.