Missive vs Siena AI

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Missive

See full pricing history

USD · US · source: missiveapp.com

Plan	Pricing	Charged by	Offer type
Starter	USD 14 / month with annual commitment $14/user/month billed yearly	Unit · per user per month, billed yearly	Standalone · Fixed
Productive Highlighted	USD 24 / month with annual commitment $24/user/month billed yearly	Unit · per user per month, billed yearly	Standalone · Fixed
Business	USD 36 / month with annual commitment $36/user/month billed yearly	Unit · per user per month, billed yearly	Standalone · Fixed

Siena AI

See full pricing history

USD · US · source: www.siena.cx

Plan	Pricing	Charged by	Offer type
Platform fee — Core AI engine and unlimited sandbox	USD 750 monthly $750/month	Flat · per month	Standalone · Fixed
Automation Pack — Ticket automation	USD 0.9 monthly $0.90 each	Usage · per ticket	Standalone · Usage based

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Missive

Starter

Plan card Email, SMS, and social accounts: Included
Plan card Team spaces and inboxes: Included
Plan card Conversations and tasks: Included

Productive

Plan card Users: Up to 50

Included
Plan card Rules and automations: Included
Plan card Basic analytics and API access: Included

Business

Plan card SAML single sign-on: Included
Plan card IP restrictions: Included
Plan card Advanced analytics and personalized onboarding: Included

Siena AI

Platform fee — Core AI engine and unlimited sandbox

Highlights Access to Siena’s core AI engine: Included
Highlights Unlimited sandbox: Included

Automation Pack — Ticket automation

Highlights Automate tickets: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Missive

August 27, 2026 Source
- Starter: USD 14 / month with annual commitment
- Productive: USD 24 / month with annual commitment
- Business: USD 36 / month with annual commitment

Siena AI

August 27, 2026 Source
- Platform fee — Core AI engine and unlimited sandbox: USD 750 monthly
- Automation Pack — Ticket automation: USD 0.9 monthly