
Instantly
7.8#2 in outreach automationFrom $47 a monthAndroidiOSWebAPI
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| Fact | Instantly | Klenty |
|---|---|---|
| API | API v2 supports programmatic management of email accounts, campaigns, leads, lists, and sub-workspaces. | Klenty documents a REST API that uses a unique API key and JSON as its primary data format. |
| Company size | LinkedIn lists Instantly.ai as a privately held software-development company with 51–200 employees and headquarters in Sheridan, Wyoming. | LinkedIn lists Klenty as a privately held software-development company with 51–200 employees. |
| Documentation | The help center contains dedicated sections for accounts, DNS, warmup, campaigns, lead search, analytics, Unibox, CRM, deliverability, troubleshooting, and 36 integration articles. | The help center has sections for teams, billing, CRM, calls, email connections, cadences, deliverability, integrations, reports, prospects, emails, APIs and webhooks. |
| Headquarters | Sheridan, Wyoming, United States | California |
| Intended users | Instantly lists agencies, freelancers, enterprise customers, founders, sales, marketing, and sales development among its use cases. | Klenty presents its plans for sales teams, including teams scaling personalized email outreach and mature SDR teams consolidating outbound tools. |
| Licence | Instantly is proprietary software; its terms reserve all rights in the platform and prohibit copying, reverse engineering, sublicensing, and derivative works. | Klenty is offered as a proprietary hosted service under terms of service; the reviewed official pages provide no open-source licence. |
| Outreach | The outreach product supports automated email sequences, unlimited sending accounts, and built-in warmup on paid plans. | It supports prospect outreach across email, calls, SMS, and LinkedIn through multi-channel cadences. |
| Product | Instantly describes itself as a sales platform combining cold email automation with a built-in B2B lead database. | Klenty describes itself as a sales engagement platform built for phone-first SDR teams. |
| Rating on Capterra | 0.0 out of 5 from 0 user reviews. | 4.6 out of 5 from 44 reviews. |
| Rating on G2 | 4.8 out of 5 from 4,159 reviews. | 4.6 out of 5 from 398 reviews. |
| Rating on GetApp | 0 out of 5 from 0 user reviews. | 4.6 out of 5 from 44 reviews. |
| Rating on Software Advice | No rating because the listing reports no reviews. | 4.6 out of 5 from 44 reviews. |
Instantly may suit agencies, freelancers, founders, and sales or marketing teams looking to combine email outreach with lead discovery. Its trial limits and paid outreach plan are relevant for teams assessing sending needs.
Klenty suits sales teams, especially phone-first SDR groups, that want to coordinate outreach across several channels. Its plans are also presented for teams scaling personalized email outreach or consolidating outbound tools.