- You want spam testing, inbox placement, client previews and an AI heatmap in one plan. MailReach offers no rendering previews or heatmaps.
- You'd rather pay a flat $9/mo than per mailbox. MailReach warmup is listed at $25/mailbox/mo (1–5 mailboxes) as of mid-2026, with no free trial for warmup.
- You want a usable free tier: 10 spam tests, 10 previews, 10 heatmaps and 3 inbox placement tests a month, AI assistant included, no card. MailReach's free tool allows 3 spam tests per 24 hours.
- You want results in about 30 seconds, with a 14-day no-questions-asked refund on paid plans.
A MailReach alternative that adds previews, heatmaps and a free tier
MailReach is a mailbox warmup platform with credit-based spam testing. Unspam skips warmup and focuses on pre-send testing: spam score, inbox placement, client previews and AI heatmaps in one plan, starting free.
Which one fits you?
- You need automated inbox warmup. That is MailReach's core product, and Unspam does not warm up inboxes at all.
- You need self-serve API access. MailReach has public APIs for both warmup and spam testing; Unspam's API is gated behind its custom-priced White Label plan.
- You want Slack and webhook notifications on scheduled spam tests across a large cold-email mailbox fleet.
Unspam vs MailReach, feature by feature.
Based on public product pages and documentation. Spotted something outdated? Tell us in the chat and we’ll fix it.
What each one costs.
MailReach is priced per warmed mailbox with volume discounts. Verified against their pricing calculator, June 2026. Exact volume breakpoints may shift.
- Free $0
10 spam tests, 10 previews, 10 heatmaps, 3 inbox placement tests per month. AI assistant included.
- Basic $9/mo
50 spam tests, 50 previews, 10 heatmaps, 10 inbox placement tests per month. Historical results.
- Business $19/mo
200 spam tests, 200 previews, 50 heatmaps, 50 inbox placement tests per month. Historical results.
- Agency from $29/mo
500 spam tests, 500 previews, 250 heatmaps, 250 inbox placement tests per month.
- White Label Custom
Spam tests, previews, heatmaps, and inbox tests sized to your contract. Custom API access.
- All-In-One warmup, 1-5 mailboxes $25/mailbox/mo ($20 billed annually)
Automated warmup, AI warming algorithm, Co-pilot assistant, reputation dashboard, blacklist/SPF/DKIM/DMARC health checks, min 20 spam test credits
- All-In-One warmup, 6-20 mailboxes $19.50/mailbox/mo ($15.60 annually)
Same features, volume discount tier
- All-In-One warmup, 21-50 mailboxes $18/mailbox/mo ($14.40 annually)
Same features, volume discount tier
- All-In-One warmup, 51+ mailboxes $16/mailbox/mo ($12.80 annually)
Same features, volume discount tier
- Spam Tester (standalone) From $9.60/mo for 25 credits
1 credit = 1 inbox placement test with deliverability report; packs scale to 10,000+ credits (custom quote above 10,000); roughly $0.18-$0.28/test at volume
Pay-as-you-go available: $12 for 25 credits.
MailReach pricing and feature information was collected from publicly available sources in June 2026 and may have changed since; it is provided for general comparison only and is not guaranteed to reflect current offers. Confirm current pricing on the vendor's website. MailReach is a trademark of its respective owner. Unspam is not affiliated with or endorsed by MailReach.
Why teams move from MailReach to Unspam.
Previews and heatmaps, not just placement
MailReach's spam test covers seed-list placement, content analysis and auth checks, but no client-rendering previews and no heatmaps. Unspam includes device previews and an AI eye-tracking heatmap in every plan, including the free one.
Flat pricing instead of per-mailbox
MailReach charges per mailbox (listed at $25/mailbox/mo at entry as of mid-2026), and reviewers call it expensive for small teams. Unspam's Basic plan is $9/mo flat for 50 spam tests, 50 previews, 10 heatmaps and 10 inbox tests, with a 14-day refund.
A free tier without a card
MailReach has no free plan or trial for warmup; its free tool allows 3 spam tests per 24 hours. Unspam's free plan gives 10 spam tests, 10 previews, 10 heatmaps and 3 inbox placement tests every month, with no credit card required.