| Price from | $4.17/mo | $69/mo |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | — |
| Plans published | 7 | 4 |
| Spec score · Email Outreach Software | 8.9 (#5) | 8.3 (#8) |
| Licence | Klenty is offered as a proprietary hosted service under terms of service; the reviewed official pages provide no open-source licence. | The terms grant only a limited proprietary use licence and prohibit copying, modification, reverse engineering and mirroring. |
| Notable news | Klenty announced SOC 2 Type 2 compliance on August 30, 2023. | LinkedIn reports that Thami Benjelloun became Mailwarm CEO after an acquisition process announced in 2025. |
| Rating on Capterra | 4.6 out of 5 from 44 reviews. | 4.9 out of 5 from 8 reviews |
| Rating on G2 | 4.6 out of 5 from 398 reviews. | 3.7 out of 5 from 14 reviews |
| Rating on Software Advice | 4.6 out of 5 from 44 reviews. | 4.9 out of 5 from 8 reviews |
| Rating on Trustpilot | 3.0 out of 5 from 2 reviews. | 3.1 out of 5 from 2 reviews |
| Support | The pricing FAQ says customer support is available 24/5 and responds within 2.5 minutes. | Every plan includes deliverability expertise, with plan-specific expert calls or on-demand calls listed on the pricing page. |
| What it does | Klenty is a sales-engagement platform for planning, executing, monitoring and optimizing prospect outreach. | Mailwarm automates email warmup and deliverability work to improve sender reputation and inbox placement. |
