Folderly
7.5#1 in email warmup softwareFree planFree planWebAPI
VisitFolderly vs Unspam.email
Unspam.email
7.4#5 in email deliverability softwareFrom $5 a monthFree planWebAPI
VisitWhat both publish
| Fact | Folderly | Unspam.email |
|---|---|---|
| API authentication | The API uses server-side Bearer API keys that are created and rotated from the account area. | REST requests use bearer tokens created per integration; tokens can be revoked individually and invalid or unauthorized calls return 401 or 403. |
| Headquarters | 8 The Green STE 300, Dover, DE 19901, United States | The company lists 167 Madison Avenue, Suite 205, New York, New York 10016, United States, and a Barcelona office. |
| Integrations | Folderly says it connects to major email service providers through API and SMTP and supports custom providers. | The API is designed to receive real messages from SES, Postmark, SendGrid, Mailgun or a customer’s SMTP system. |
| Intended users | Folderly presents its suite for B2B teams and highlights outbound campaigns, cold outreach, and marketing use cases. | The company describes the platform as serving marketers, founders, agencies, and product teams. |
| Purpose | Folderly describes its suite as AI and email deliverability tools for B2B teams that help draft campaigns, check sending setups, and monitor delivery. | Unspam is an email deliverability platform that checks spam signals, sender authentication, blacklists, previews, heatmaps, and inbox placement. |
| Rating on Capterra | 4.8 out of 5 from 44 reviews | 5.0 out of 5 from 1 review. |
| Rating on G2 | 4.8 out of 5 from 103 reviews | 4.8 out of 5 from 32 reviews. |
| Security | Folderly says its security program is supported by SOC 2 Type II and ISO 27001. | The privacy policy says stored data is kept on services and providers certified to ISO/IEC 27001:2013, PCI DSS, SOC 1 Type II, and SOC 2 Type II or higher. |
Folderly plans
- Inbox Insights FreeFree
- PulseFree
- Folderly — 25–99 mailboxes$56
- Folderly 25–99 mailboxes (yearly)$56 a month
- Folderly 10–24 mailboxes (yearly)$72 a month
- Folderly — 10–24 mailboxes$72
Unspam.email plans
- FreeFree
- No accountFree
- Custom plan$5 a month
- Basic$9 a month
- Business$19 a month
- Agency$29 a month
Pick Folderly if…
Folderly suits B2B teams that need campaign drafting alongside delivery checks and monitoring. Its tools address outbound campaigns, cold outreach, and marketing use cases.
Pick Unspam.email if…
It suits marketers, founders, agencies and product teams that need to check email deliverability or track inbox placement. Teams evaluating the free plan should account for its test, retention and feature limits.