Parthenon is a constituent relationship management and communications platform for elected officials, available on Android, iOS and web. Its Reach product sends newsletters, alerts, press releases and SMS from one platform. Nexus brings constituent records, inbox, messaging and casework management together. It includes a mobile app for capturing constituent interactions in the field, plus an Outlook add-in that validates residency, generates AI-enabled responses and summarizes past interactions. The add-in is approved for Microsoft 365. Parthenon lists city councils, county commissions, school boards, state legislatures and the U.S. Congress among its customers. The cloud service is paid, with a 14-day trial and no free plan. Reach 1k costs 19.00 USD per month, billed monthly, for up to 1,000 contacts and one user license; a .gov email is required. SMS is an optional paid add-on with platform fees and usage-based credits, and sending requires registering a 10DLC number with the FCC. Parthenon Labs says it is SOC 2 Type 2 certified; Nexus says customer data is hosted in the United States and remains government-owned.
Who it is for
Parthenon suits elected officials and government bodies that need constituent records, casework management and communications. Its listed customer types range from local boards and councils to state legislatures and Congress.
What is good
- Combines constituent records, inbox and casework
- Reach sends newsletters, alerts, press releases and SMS
- Nexus includes a mobile app for field interactions
- Outlook add-in is approved for Microsoft 365
- Nexus says data remains government-owned
What to know first
- No free plan
- SMS add-on has platform fees and usage-based credits
- SMS sending requires 10DLC registration with the FCC
- .gov email is required for listed Reach plans
Verdict
Parthenon brings constituent records, casework and outreach together for government users, with mobile and Outlook tools in Nexus. Budget for the paid service and SMS add-on, and account for the .gov email and number-registration requirements.
Parthenon plans and pricing
All plansCompared on public sector CRM software
- Free plan
- No
- Case management
- Yes
- Constituent records
- Yes
- Outreach channels
- multichannel
- Deployment options
- cloud

