Bland vs Zernio

Bland supports 46 of the 77 features compared here, and Zernio supports 57.

Feature comparison

Feature	Bland	Zernio
iMessage messaging
iMessage	PartialEnterprise plans only; Bland provisions an iMessage-capable number on request	Supported
Group chats	Not listed	SupportedGroups on ordered senders: reply, create, rename, photo, members. Not on the sandbox line.
Group management	Not listed	SupportedStart a group from a sender and add or remove participants; applied asynchronously.
Group name and photo	Not listed	SupportedRename a group or change its photo, one change per call.
Mentions	Not listed	Not listed
Tapbacks	SupportedSend and receive, per the iMessage guide; no API field, the agent decides	SupportedSix Apple tapbacks plus custom emoji (iOS 18+). Inbound reactions arrive by webhook.
Threaded replies	Not listed	SupportedreplyTo on sends; inbound messages carry the reply thread id.
Typing indicators	SupportedListed in the iMessage guide	PartialSend only, 1:1 chats, about 15 seconds, after a recent two-way exchange.
Read receipts	Supported	PartialMark a chat read inside an active two-way chat. Webhook docs list message.read for other platforms only.
Edit and unsend	Not listedAPI deletes stored messages from a conversation; unsend on the device is not mentioned	SupportedEdit text within 15 minutes; unsend within 2 minutes removes the bubble for the recipient.
Message effects	Not listed	Supported13 screen and bubble effects, such as slam, invisibleInk, confetti and fireworks.
Animated text effects	SupportedGuide lists text effects; which effects and how they are set is not documented	Not listed
Stickers	SupportedLive Stickers, per the iMessage guide	PartialInbound stickers are typed as sticker. Sending stickers is not documented.
Formatted text	Not listed	SupportedInline *bold*, _italic_, __underline__ and ~strikethrough~ markup renders as rich text.
Attachments	SupportedPhotos, videos, PDFs and spreadsheets both ways; agents can generate files to send	SupportedUp to 10 per message, each a public https URL of at most 256 characters.
Live Photos	Not listed	Not listed
Rich link previews	Not listed	SupportedOn by default; linkPreview: false sends links as plain text.
Voice messages	SupportedSend and receive voice memos; inbound memos are transcribed	SupportedvoiceNote: true on an audio file. Inbound voice messages come with a transcript.
Contact cards	Not listed	PartialcontactCard shares the sender's own card only.
Polls	Not listed	Not listed
Chat backgrounds	Not listed	Not listed
Location sharing	Not listed	PartialStatic location pins only. Inbound shared locations arrive without coordinates.
iMessage apps	Not listed	Not listed
Live app cards	Not listed	Not listed
Sender name and photo	SupportedBranded contact with your company name and profile image	PartialSets the name and photo on the sender's contact card, which recipients see when they save it.
FaceTime calls	Not listed	Not listedInbound FaceTime attempts show in the thread as call-typed messages. No calling documented.
Delivery status	SupportedGuide lists delivery status; messages carry sent, delivered, read or failed	Supportedmessage.delivered and message.failed webhooks; sends deferred for pacing show as queued.
iMessage availability check	Not listed	Not listed
Focus and Notify Anyway	Not listed	Not listed
Numbers and delivery
Managed lines	SupportedBland provisions iMessage-capable numbers for Enterprise accounts	SupportedZernio orders numbers on its delivery provider's Apple-registered infrastructure.
Dedicated numbers	SupportedAgent Phone Plan includes one dedicated US number; Enterprise numbers by request	SupportedUS or UK numbers, some active instantly; email-handle senders through the API.
Shared numbers	PartialFree credits call from a shared Bland number; texting needs your own number	SupportedFree shared sandbox line for testing: contact writes first, 5 contacts, 50 messages a day.
Bring your own number	PartialYour own Twilio numbers or SIP trunks for voice and SMS; not documented for iMessage	PartialiMessage cannot run on a number you own. A sender held with the provider can be registered.
Line pooling	PartialCustom Dialing picks numbers from a pool for outbound calls only	Not listedOne sender per profile; docs suggest spreading contacts across senders by hand.
SMS fallback	SupportedUses the richest channel the recipient supports and falls back to SMS	SupportedSMS or RCS from the same number when the contact is not on iMessage.
RCS fallback	Not listedDocs say Bland picks the richest channel; an iMessage to RCS order is not stated	SupportedSMS or RCS from the same number; the provider picks per contact.
Outbound-first messaging	SupportedSend SMS creates or resumes a conversation on any channel	SupportedOne new chat per 15 minutes per sender, warm-up from 2 to 50 a day, no links in openers.
Calls on the iMessage number	Not listed	PartialOrdered numbers include call forwarding. Placing calls from the iMessage number is not documented.
Other channels
SMS	SupportedEnterprise plans and the Agent Phone Plan; US numbers need A2P registration	Supported
RCS	PartialEnterprise only, enabled by your account executive	Supported
WhatsApp	PartialEnterprise only; a channel value on the Messaging API, no setup guide in the docs	Supported
Telegram	Not supportedNot offered	Supported
Slack	Not supportedNot a messaging channel; Slack is listed only as a tool integration	Supported
Email	Not supportedNot offered as a messaging channel	Not supportedNot offered as a channel. iMessage senders can use an email handle.
Phone calls	SupportedCore product: inbound and outbound AI phone calls, plus SIP	SupportedInbound and outbound PSTN calls, SIP trunks, browser softphone, recording and transcription.
Apple Messages for Business	Not listedProduct page says Bland handles Apple Business Messaging registration; docs describe numbers	Not supportedNot offered
Unified channel API	PartialSMS, RCS, WhatsApp and iMessage share the /v1/sms endpoints; calls use a separate API	SupportedSame inbox send call and webhooks for iMessage, SMS, WhatsApp, Telegram, Slack and social DMs.
Developer tools
REST API	Supported	Supported
TypeScript SDK	PartialDocs list a Web Agent SDK for browser voice and a TTS library; no messaging SDK	Supported@zernio/node
Python SDK	Not listed	Supportedzernio-sdk
Other SDKs	Not listed	SupportedGo, Ruby, Java, PHP, .NET and Rust.
CLI	Supportedbland-cli on npm	SupportedZernio CLI, including iMessage inbox sends and reactions.
Webhooks	SupportedMessage and status webhooks per number or per request, with a channel field	Supported
Signed webhooks	SupportedHMAC-SHA256 in X-Webhook-Signature; asymmetric JWT signing on Enterprise	SupportedHMAC-SHA256 of the raw body in X-Zernio-Signature, keyed by your secret.
MCP server	SupportedHosted MCP server; personal agents connected to it can place calls and send texts	SupportedHosted at mcp.zernio.com/mcp, with OAuth sign-in or an API key.
Open source	Not supportedClosed platform	PartialSDKs, CLI, n8n node and Chat SDK adapter are MIT or Apache-2.0. The platform is closed.
Self-hosting	PartialEnterprise: your own VPC, on-premises or air-gapped deployments	Not supportedHosted cloud service only
Local testing	SupportedPathway Chat API and Testbed run agent conversations without a phone	Not listedThe free sandbox still needs your own phone or Apple ID.
Custom channel providers	PartialBring your own Twilio account or SIP carrier for telephony	Not listed
Event replay	PartialAutomatic webhook retries; resend endpoint for call webhooks; SMS delivery log readable	Supported7 attempts over about 51 hours, then dead-letter; any past event can be redelivered.
OpenTelemetry	Not listed	Not listed
No-code integrations	SupportedZapier, Make and Pipedream on the integrations page	Partialn8n, Make and Zapier guides cover posting; Make's API call module reaches any endpoint.
CRM integrations	SupportedHubSpot and Salesforce	SupportedHubSpot: inbox contacts and messages sync to HubSpot timelines.
Built for AI agents
Agent framework	SupportedPathways, personas and versioned agents drive voice and every messaging channel	PartialWorkflow engine with AI and handoff nodes; the workflow docs do not list iMessage.
Agent framework integrations	PartialMCP guides for OpenClaw, Poke, Meta Muse and coding agents; no LangChain or Vercel AI SDK	PartialVercel Chat SDK adapter (iMessage not listed) and an OpenClaw skill.
Streaming replies	Not listed	PartialChat SDK adapter streams by editing on Telegram only.
Agent group chats	Not listed	Not listed
Human handoff	SupportedHand a thread to a human and resume the agent, by API or a pathway node	PartialDashboard inbox and workflow handoff nodes; no iMessage-specific handoff documented.
Audit logs	PartialEnterprise feature, not yet available for all accounts	SupportedAppend-only log of team-management actions; Enterprise adds broader audit logs.
Message history API	SupportedList and read conversations with messages and delivery status	Supported
Plans and compliance
Free plan	PartialFree Start plan with credits is for voice; messaging needs Agent Phone Plan or Enterprise	SupportedFirst 2 connected accounts free; free iMessage sandbox (5 contacts, 50 messages a day).
Public pricing	PartialVoice plans and SMS rates are public; iMessage, RCS and WhatsApp prices are not	Supported$200 per iMessage sender per month, plus the connected-account fee.
No per-message fees	PartialSMS costs $0.02 per message; the Agent Phone Plan is flat with a 100 texts a day cap	PartialiMessage pages say no per-message fee; an outbound meter of $1 per 10,000 after 10,000 starts Oct 2026.
Uptime SLA	SupportedPricing page lists a 99.9% uptime SLA on every plan	Not listedSite states 99.97% uptime; no contractual SLA found.
Isolated infrastructure	PartialEnterprise customers run on their own isolated infrastructure	Not listed
SOC 2 Type II	SupportedSOC 2 Type II, independently audited	SupportedSOC 2 Type II report in the trust portal, by access request.
GDPR	SupportedGDPR compliant, with a DPA in enterprise contracts	SupportedGDPR documentation in the trust portal; public DPA.

Checked on each provider's own site and docs on 2026-10-25. “Not listed” means the provider does not mention it.

Pricing

Which should you choose?

Choose Bland if you need animated text effects, line pooling, self-hosting and local testing.

Choose Zernio if you need group chats, group management, group name and photo and threaded replies.

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