Head-to-head
Astonish Email vs Postmaster Tools
Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.
Astonish Email
UK email marketing for organisations sending large lists
From $32/mo
Visit Astonish EmailPostmaster Tools
Email sender analytics and delivery diagnostics from Gmail
From Free
Visit Postmaster ToolsAt a glance
| Astonish Email | Postmaster Tools | |
|---|---|---|
| Tagline | UK email marketing for organisations sending large lists | Email sender analytics and delivery diagnostics from Gmail |
| Pricing model | Paid | Free |
| Starts at | $32/mo | Free |
| Founded | — | — |
| AI-native | ||
| Categories | Email Marketing | Analytics, Email Marketing |
| Vendor claimed |
Quick take
Pick Astonish Email if you need uk email marketing for organisations sending large lists. Pick Postmaster Tools if you need email sender analytics and delivery diagnostics from gmail.
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Frequently asked
- Is Astonish Email better than Postmaster Tools?
- It depends on your use case. Astonish Email is uk email marketing for organisations sending large lists, while Postmaster Tools is email sender analytics and delivery diagnostics from gmail. See the comparison above for which fits your team.
- What's the price difference between Astonish Email and Postmaster Tools?
- Astonish Email starts at $32/mo. Postmaster Tools starts at Free.
- Can I migrate from Astonish Email to Postmaster Tools?
- Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.