CallHub
8.2#1 in sms marketing softwareFree planFree planAndroidiOSWebAPI
Visit
| Fact | CallHub | Txtra |
|---|---|---|
| API | The public API uses regional HTTPS endpoints under api-[region].callhub.io/v1/, JSON responses, and token authorization; it supports contacts, campaigns, and webhooks. | The REST API is in early access, and every API send passes the same compliance gate as the app with no bypass parameter. |
| Headquarters | Washington, DC, United States | South Jersey, United States |
| Integrations | Direct integrations include NGP VAN, NationBuilder, Action Network, PDI, Salesforce, EveryAction, CiviCRM, Blackbaud, Blue State Digital, and Freshsales. | Txtra connects with voter-file providers, CRMs, fundraising platforms, and spreadsheets; its product page specifically mentions VAN, L2, ActBlue, and WinRed. |
CallHub suits campaign teams and organizations coordinating calls, mass or peer-to-peer texts, and outreach workflows. Its listed contact and agent limits can help teams assess whether Essential fits their size.
Txtra suits candidate campaigns, party committees, PACs, advocacy groups, unions, consultants, and agencies that need campaign texting and consent checks. Teams seeking API access need a Committee plan or above and must request early-access keys.