Folderly
Email deliverability testing and inbox placement monitoring.
From $79/mo Free tier
Bottom line
Folderly tests email deliverability and monitors inbox placement. The listing floor is $79/mo.
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.
The listing starts at $79/mo. That is a monitoring seat, 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
Folderly lists from $79/mo for email deliverability testing and inbox placement monitoring. Confirm live domain caps, seed-list size, and any annual toggle on the vendor pricing page. Confirm current terms on the vendor site.
Checked 19 Sep 2026. Vendors change prices without notice.
Is Folderly expensive?
Folderly starts at $79/mo. We list 41 deliverability tools in total. 4 have a free tier, and those with a public price typically start around $12 a month.
- 1 quote-based
- 4 free tier
- 40 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
- Published $79/mo listing floor
- 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 |
| | – | $37/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.
$37/mo API
Plusvibe is AI cold email plus deliverability from $37/mo, a sender with tooling rather than a monitor.
Your next step
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