Voice as a foundation
Kartra covers pages, email, and memberships, and its AI writes copy. Mercury adds AI voice agents that answer calls, a full outbound dialer, and 40+ languages.
Mercury vs Kartra
Marketing all-in-one is not operations all-in-one. Mercury adds the phones, AI voice, and dispatch.
Why Mercury
Why choose Mercury over Kartra?
Texting without your own Twilio
Kartra SMS runs through your own Twilio, Plivo, or Vonage account. Mercury includes numbers and texting with published rates.
Usage margin, not just seat resale
Kartra Agency resells client accounts at a discount. Mercury Professional adds usage rebilling, so you mark up calls and texts too.
Dispatch for the field
Job tracking, technician updates, and AI customer notifications come with Mercury Agencies.
Side by side
Feature comparison
How Mercury Call Desk stacks up against Kartra.
| Features |  Kartra |  |
|---|---|---|
| AI voice agents | Not included | Included |
| Outbound dialer | Not included | Included: Native, 10 lines per account |
| Dispatch | Not included | Included: Agencies and up |
| Usage rebilling for agencies | Partly, or as an add-on: Subscription markup only | Included: Professional and up |
| Unlimited sub-accounts | Partly, or as an add-on: Paid client accounts, 40% off | Included: Professional and up |
| Published usage rates | Partly, or as an add-on: Bring your own Twilio | Included |
| MCP access | Not included | Included |
| Setup fees | Included: None listed | Included: None |
| Migration help | Not included | Included: Agencies and up |
IncludedPartly, or as an add-onNot included
Kartra details from public sources, checked October 2026: Kartra pricing, Kartra Agency, Kartra SMS setup. Pricing and features change; check with Kartra for current terms.
Kartra bundles marketing tools for creators and small businesses. Mercury is the operations layer underneath: every call answered, every lead worked, every job dispatched.
Pricing
Simple math
One flat monthly rate against per-seat, per-agent, and per-product pricing.
Kartra
From $52/mo billed annually
Before the add-ons it takes to match Mercury: AI voice agents, a real dialer, and dispatch.
Mercury Call Desk
- $99/mo Starter, 5 sub-accounts
- $299/mo Professional, unlimited sub-accounts and usage rebilling
- $399/mo Agencies, limited time, dispatch and SaaS resale
Unlimited users and contacts on every plan. No setup fees. Published usage rates. Enterprise custom.
Get Started
Ready to leave Kartra behind?
Call (949) 775-0451 right now and try to stump the assistant, or schedule a custom demo at a time that works for you.