Comms vs Blooio
Two hosted iMessage APIs with RCS and SMS fallback, compared on plans and features as of 18 October 2026.
$200 vs $289
A dedicated line that can start conversations: Comms $200/month, Blooio $289/month.
MCP on both
Claude, Cursor and other MCP clients can send messages with either.
Inbox and agents
Comms includes a team inbox and hosted AI agents with human handoff.
At a glance
Reviewed . Current product facts
Comms by Osis and Blooio are both hosted phone-number iMessage APIs. On a dedicated line that can start conversations, Comms is $200/month with $0 setup and Blooio Commercial Dedicated is $289/month. If you only reply to people who message you first, Blooio’s $98/month Inbound line costs less. Prices are from each provider’s pricing page on 18 October 2026.
Both have a hosted MCP server, so Claude, Cursor and other MCP clients can send messages. Comms also includes a team inbox and hosted AI agents with human handoff in the same workspace. Blooio additionally sells Apple Messages for Business, which is a separate, Apple-approved channel.
Plans and capabilities
Compare the plan you would actually run in production.
| Comms by Osis | Blooio | |
|---|---|---|
| Dedicated line with outbound | $200/month, $0 setup | $289/month (Commercial Dedicated); Enterprise from $389 for one line down to $195 a line at 6+ lines |
| Reply-only dedicated line | Not offered separately | $98/month (Inbound); cannot start new conversations |
| Shared lines | Free (100 messages a day) and Plus at $50/month; the contact texts first | Starter $39/month (5 new conversations a day) and Commercial Shared $89/month (15 a day) |
| Free trial | Free plan on a shared line, no card | 20 free messages on a shared number |
| Fallback | iMessage, eligible RCS, then SMS after a confirmed pre-send rejection | RCS and SMS fallback |
| Hosted MCP server | Yes, with OAuth or a scoped API key | Yes, with an API key or access token |
| Team inbox and hosted agents | Included | Not part of the plans compared here |
| Setup fees | $0 | None; a custom area code is $75 one-off |
Outbound limits
Blooio paces a number that opens more than 10 new chats a day on a trailing three-day average when fewer than 40% of them get a written reply, and allows three first-contact messages per chat until the recipient replies. Comms Dedicated allows up to 7,000 messages a day per line, subject to spam prevention and line health. On either service, a number that sends unwanted messages can be restricted, so message people who expect to hear from you.
What Comms provides
Comms offers a hosted messaging API, signed inbound webhooks, a team inbox, optional agents and hosted MCP. Free is a shared test line with 100 messages/day. Plus is $50/month on a shared platform line. Dedicated is $200/month with $0 setup; it is a different plan with a dedicated number.
API line claiming requires workspace approval and available inventory. A denied claim returns line_claim_not_allowed; unavailable inventory returns no_available_line.
RCS requires a supported dedicated line, carrier enablement, and a compatible recipient. Sending currently supports one plain-text message to an E.164 phone number.
Porting requires approval and a supported number. Confirm port-in, port-out, geographic availability, fees, and timing before planning a migration. You can cancel replacement setup before submitting the transfer; a submitted transfer cannot be canceled from the setup panel.
AI usage is billed separately from messaging plans, through prepaid Comms credits or a connected customer OpenRouter account. No messaging plan includes AI usage. Review credit-purchase fees and model costs before enabling a hosted agent.
Test each provider
Use a consenting recipient and an eligible test line. Send a message with a stable retry identity, receive a reply, verify the webhook signature, replay an event, and reconcile a delivery receipt. Test explicit channel failures and uncertain sends separately. An accepted request is not a delivered message.
For a SaaS integration, use two tenants and prove that a reply cannot reach the wrong tenant. Check human handoff, opt-outs, credential scopes and line offboarding. Ask each provider for number control, supported countries, throughput and service terms in writing.
When each one fits
Blooio fits a reply-only AI agent on a budget, or a team that also wants Apple Messages for Business from the same vendor. Comms fits teams that start conversations on a dedicated line and want the API, a team inbox, hosted agents and hosted MCP in one workspace.
Get a dedicated line.
Dedicated is $200/month with $0 setup. Book a call to scope lines for your team, or start on a free shared line to test.