Folderly
Email deliverability testing and inbox placement monitoring.
From $79/mo Free tier
Bottom line
Folderly tests email deliverability and monitors inbox placement. Inbox Insights has a free tier with 2 tests a month, then $79/mo for 100 tests.
Stands out for: The product is placement and authentication (SPF, DKIM, DMARC, seed-list inbox tests), not a warmup bot and not a sequencer.
Watch out for: Folderly does not send your campaigns. You still need Instantly, Smartlead, or Google Workspace as the actual mail server.
Overview
Folderly is deliverability software: inbox placement tests, spam-folder diagnostics, and authentication monitoring. It tells you whether campaigns land in primary, promotions, or spam, and what to fix on DNS and reputation.
Inbox Insights is free for 2 tests a month, then $79/mo for 100 tests. The core Folderly product is $96 per mailbox per month on yearly billing. That is monitoring, not a sending plan. Pair it with a sequencer and, if you still need reputation, a warmup tool such as Mailreach or Warmbox.
Who it's for
Best for
- Outbound teams whose mail is landing in spam and need placement proof
- RevOps watching DMARC and inbox placement across many domains
- Agencies that want a deliverability report to show clients
- Senders who already have warmup and now need monitoring
Not ideal for
- Teams that only need a $15 warmup mailbox
- Buyers looking for a cold-email sequencer
Key features
Overview. See the vendor site for current features and packaging.
Pricing
| Plan | Price | What you get |
|---|---|---|
| Inbox Insights Free | $0 | 2 tests/mo |
| Inbox Insights | $79/mo | 100 tests/mo; $799/yr billed yearly |
| Folderly | $96/mailbox/mo | Yearly billing |
| Pulse | $0 | Spam placement alerts |
Inbox Insights (placement tests before you launch) has a free tier with 2 tests a month, then $79/month for 100 tests, or $799 a year. The core Folderly deliverability product is $96 per mailbox per month on yearly billing. Pulse spam-placement alerts are free. Confirm current terms on the vendor site.
Checked 4 Nov 2026. Vendors change prices without notice.
Is Folderly expensive?
Folderly starts at $79/mo. We list 54 deliverability tools in total. 10 have a free tier, and those with a public price typically start around $29 a month.
- 1 quote-based
- 10 free tier
- 51 public price
Worked out automatically from every deliverability listing, so it updates as the directory changes.
Pros and cons
Pros
- Inbox placement tests rather than warmup-only
- Free tier with 2 placement tests a month
- Useful when the problem is DNS and reputation, not copy
Cons
- Does not send or warm the mail for you
- Overlap with Instantly's built-in placement features
What's new at Folderly
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How Folderly compares
See all Folderly alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| | ✓ | $79/mo | – | – | |
| | – | $20/mo | – | – | Compare |
| | – | $15/mo | – | – | Compare |
| | – | $39/mo | – | – | Compare |
| | – | $30.80/mo | – | ✓ | Compare |
$20/mo
Mailreach is warmup from $20/mo, cheaper if you only need a warmup network, not placement analytics.
$15/mo
Warmbox is automated warmup from $15/mo, a reputation builder rather than Folderly's inbox-placement monitor.
$39/mo
InboxEagle is seed-list placement monitoring from $39/mo, a closer monitoring peer.
$30.80/mo API
Plusvibe is AI cold email plus deliverability from $37/mo, a sender with tooling rather than a monitor.
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