Callbox alternatives
These are the 10 agencies in the index closest to Callbox on services, regions, segments, named stack and budget, most similar first. Callbox runs cold calling, cold email, LinkedIn outreach and appointment setting from Encino, US. It ranks 13 of 103 in the index.
| # | Agency | HQ | Stack | From (monthly) | Model | Proof | Badges |
|---|---|---|---|---|---|---|---|
| 1 | Belkins↗ Shares cold calling, cold email, LinkedIn outreach and appointment setting; also serves worldwide and Europe. | Dover, US | HubSpot, Custom | $5,000 | Retainer | Clutch4.9 (234) | Verified DeliverabilityEditor's PickTop Outbound Agency US 2026Top Outbound Agency Europe 2026 |
| 2 | CIENCE↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting, SDR outsourcing and list building; also serves worldwide. | Denver, US | HubSpot, Custom | $2,499 | Retainer | G23.7 (180) | SDR PodEditor's Pick |
| 3 | Martal Group↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting and SDR outsourcing; also serves Asia-Pacific and Europe. | Toronto, CA | Custom | Ask | Retainer | G24.6 (135) | SDR PodEditor's PickTop Outbound Agency Europe 2026Top Outbound Agency Canada 2026Top Outbound Agency APAC 2026 |
| 4 | Pearl Lemon Leads↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting, SDR outsourcing and list building; also serves worldwide. | London, UK | Custom | Ask | Not published | n/a | SDR Pod |
| 5 | Revnew↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting and SDR outsourcing; also serves worldwide. | Claymont, US | Custom | $2,900 | Hybrid | Clutch4.6 (10) | Pay-Per-MeetingSDR Pod |
| 6 | Konsyg↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting and SDR outsourcing; also serves worldwide and Asia-Pacific. | Singapore, SG | Custom | Ask | Not published | G24.7 (17) | SDR Pod |
| 7 | ORRJO↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting and SDR outsourcing; also serves Europe. | Glasgow, UK | Custom | Ask | Retainer | n/a | SDR Pod |
| 8 | Leadium↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting, SDR outsourcing and list building. | Las Vegas, US | Custom | $3,500 | Retainer | Clutch5.0 (88) | SDR Pod |
| 9 | Operatix↗ Shares cold calling, cold email, appointment setting and SDR outsourcing; also serves Asia-Pacific and Europe. | London, UK | Custom | Ask | Retainer | n/a | SDR Pod |
| 10 | SalesRoads↗ Shares cold calling, cold email, LinkedIn outreach, appointment setting and SDR outsourcing. | Fort Lauderdale, US | Custom | $6,950 | Hybrid | Clutch4.9 (69) | Pay-Per-MeetingSDR PodEditor's PickTop Outbound Agency US 2026 |