Causo vs Reply.io
Causo and Reply.io are both sales engagement & outbound tools. Causo is aimed at small businesses and freelancers, while Reply.io is aimed at small businesses and agencies. Causo costs less, from $19/mo versus $59/mo for Reply.io. Only Causo has a free plan.
AI prospecting agent that researches leads with sources, plus MCP
Multichannel cold outreach with an AI SDR for B2B sales teams
| Pricing | Freemium · $19 | Paid · $59 |
| Starting price | $19/mo | $59/mo |
| Free plan | Yes | No |
| Free trial | — | 14 days |
| Built for | Small businesses, Freelancers, Agencies | Small businesses, Agencies, Freelancers |
| Platforms | web | web |
| Country | GB · 2025 | — · 2014 |
| Rating | — | — |
Choose Causo if
Founders and small sales teams prospecting into niche markets who want sourced research rather than raw database filters.
- Finds companies in niches that static databases miss
- Every match comes with sources you can check
- Low $19 entry plan and a free start without a card
Look elsewhere if: Sales teams that need a huge contact database, CRM sync and full multichannel sequencing (Apollo, ZoomInfo).
Choose Reply.io if
SMB outbound teams and lead-gen agencies that want email, LinkedIn, calling and an AI SDR in one platform at mid-market prices.
- Email, LinkedIn and calls in one sequence builder
- Pricing by active contacts with unlimited sends
- Deliverability tooling and domain buying built in
Look elsewhere if: Large enterprise sales orgs needing deep forecasting and governance, or teams that only send cold email (Outreach or Instantly).
Causo vs Reply.io pricing
Causo
- Free$050 one-time tokens, 20 agent messages, 1 mailbox, no card
- Let me try$19/mo100 tokens/mo, unlimited agent messages, CSV export
- Founder's Delight$79/mo500 tokens/mo, up to 3 mailboxes, top-ups $0.30/token
- Serious Business$259/mo2,000 tokens/mo, up to 5 mailboxes, top-ups $0.30/token
- EnterpriseCustomCustom tokens, unlimited mailboxes, team workspace
Reply.io
- Email Volume$59/mo$49 billed annually; 1,000 active contacts, unlimited emails
- Multichannel$99/user/mo$89 billed annually; email, LinkedIn, calls, SMS, 5 mailboxes
- AI SDR$500/moBilled annually; Jason AI SDR, 1,000 active contacts
- Agency Core$210/moUnlimited client workspaces and users; LinkedIn $69/account
Causo · Key features
- Plain-language ideal customer search across public web sources
- Sourced evidence explaining why each company matches
- Decision-maker lookup with email verification
- Research-based outreach drafts you edit before sending
- Connected mailboxes and one-token outreach sequences
- Remote MCP server for Claude, ChatGPT, Cursor and Codex
Cons
- No CRM integration named on the site
- Tokens run out quickly on large prospect lists
- Prices are marked early bird and may change
Reply.io · Key features
- Multichannel sequences with email, LinkedIn, calls, SMS and WhatsApp tasks
- Jason AI SDR that prospects, writes emails and handles replies
- Built-in B2B contact database with intent and technology filters
- Unlimited mailboxes with inbox rotation, warm-up and health checks
- Domain and mailbox purchase with SPF, DKIM and DMARC setup
- AI reply categorization, icebreakers and sequence builder
Cons
- LinkedIn, calls and data credits add up as paid add-ons
- AI SDR plan is expensive for small teams
- Interface has many settings and takes time to learn
Causo vs Reply.io: FAQ
Which is cheaper, Causo or Reply.io?
Causo starts at $19/mo and Reply.io at $59/mo. Both prices are checked on the vendors' own pricing pages.
Do Causo and Reply.io have a free plan?
Causo has a free plan. Reply.io has no free plan, a 14-day free trial.