What is the difference between Bland and Inkbox?

Bland supports 46 of the 77 features compared here, and Inkbox supports 45. Bland adds animated text effects, stickers, voice messages, bring your own number and WhatsApp. Inkbox adds group chats, group management, threaded replies, message effects and contact cards.

How much do Bland and Inkbox cost?

Bland: Voice plans are Start (free, $0.14 a minute), Build ($299 a month) and Scale ($499 a month); SMS is $0.02 per message; the Agent Phone Plan is $29.99 a month for one number; iMessage, RCS and WhatsApp need a custom Enterprise contract. Inkbox: Free covers 3 identities with shared iMessage; Developer is $25 a month with a VoIP number; Startup is $167 a month with one dedicated iMessage number; Enterprise is custom. SMS/MMS and call minutes over allowance cost $0.03 each.

Does Inkbox support animated text effects?

Inkbox does not list animated text effects on its site or in its docs.

Does Inkbox support stickers?

Inkbox does not list stickers on its site or in its docs.

Does Inkbox support voice messages?

Inkbox does not list voice messages on its site or in its docs.

Bland vs Inkbox

Compare Bland and Inkbox side by side: iMessage features, channels, developer tools, pricing and compliance, checked on each provider's own site.

Bland

Voice AI platform with SMS, RCS and branded iMessage agents

Starting price: Custom (iMessage is Enterprise only); SMS from $29.99/month on the Agent Phone Plan
Free plan: Start plan: free, with credits and an inbound number, for voice

Visit Bland Read more

Inkbox

Email, phone, iMessage and A2A identity for AI agents

Starting price: $25/month (Developer); $167/month for a dedicated iMessage number (Startup)
Free plan: Free: 3 identities, shared iMessage up to 2,000 messages a month and 3 recipients at a time

Visit Inkbox Read more

Bland supports 46 of the 77 features compared here, and Inkbox supports 45.

Where Bland is ahead

and 6 more in the table below.

Where Inkbox is ahead

and 5 more in the table below.

Feature comparison

Feature	Bland	Inkbox
iMessage messaging
iMessage	PartialEnterprise plans only; Bland provisions an iMessage-capable number on request	SupportedShared router service on every plan, or a dedicated line from the Startup plan.
Group chats	Not listed	SupportedDedicated lines only, 2 to 8 remote participants. Shared service is 1:1.
Group management	Not listed	PartialCreate a group by sending to 2 to 8 numbers. No add or remove member API in V1.
Group name and photo	Not listed	Not listed
Mentions	Not listed	Not listed
Tapbacks	SupportedSend and receive, per the iMessage guide; no API field, the agent decides	SupportedSend, replace and remove 7 tapbacks including eyes; inbound tapbacks arrive by webhook.
Threaded replies	Not listed	Supportedreply_to_message_id in 1:1 and group chats, with thread reads. Falls back to a plain reply.
Typing indicators	SupportedListed in the iMessage guide	PartialSend only, in 1:1 chats. Groups and inbound typing events are not supported.
Read receipts	Supported	PartialSend read receipts in 1:1 chats. No read status for your own sent messages is documented.
Edit and unsend	Not listedAPI deletes stored messages from a conversation; unsend on the device is not mentioned	Not listed
Message effects	Not listed	Supported4 bubble and 9 full-screen send styles, in 1:1 and dedicated-line groups.
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	Not listed
Formatted text	Not listed	Not listed
Attachments	SupportedPhotos, videos, PDFs and spreadsheets both ways; agents can generate files to send	SupportedOne media item per message, uploads up to 10 MiB. No media before the recipient's first reply.
Live Photos	Not listed	Not listed
Rich link previews	Not listed	Not listed
Voice messages	SupportedSend and receive voice memos; inbound memos are transcribed	Not listed
Contact cards	Not listed	PartialThe router sends the agent's contact card on connect. Sending other vCards is not documented.
Polls	Not listed	Not listed
Chat backgrounds	Not listed	Not listed
Location sharing	Not listed	Not listed
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	SupportedDedicated lines share the identity's display name and avatar automatically.
FaceTime calls	Not listed	Not listedCalls run over iMessage lines, but the docs do not say whether they are FaceTime.
Delivery status	SupportedGuide lists delivery status; messages carry sent, delivered, read or failed	Supportedimessage.sent, imessage.delivered and imessage.delivery_failed webhooks, per recipient in groups.
iMessage availability check	Not listed	SupportedReturns iMessage, SMS or RCS for any E.164 number.
Focus and Notify Anyway	Not listed	Not listed
Numbers and delivery
Managed lines	SupportedBland provisions iMessage-capable numbers for Enterprise accounts	SupportedShared router lines and dedicated lines run by Inkbox. No Mac needed.
Dedicated numbers	SupportedAgent Phone Plan includes one dedicated US number; Enterprise numbers by request	SupportedStartup plan includes one dedicated iMessage number. VoIP numbers for calls and SMS from Developer.
Shared numbers	PartialFree credits call from a shared Bland number; texting needs your own number	SupportedFree and paid plans include shared iMessage. The human must text the router first.
Bring your own number	PartialYour own Twilio numbers or SIP trunks for voice and SMS; not documented for iMessage	Not listed
Line pooling	PartialCustom Dialing picks numbers from a pool for outbound calls only	BetaOrganization-owned shared iMessage pools, beta and by request only.
SMS fallback	SupportedUses the richest channel the recipient supports and falls back to SMS	SupportedInkbox tries iMessage first and can fall back to SMS; was_downgraded marks it.
RCS fallback	Not listedDocs say Bland picks the richest channel; an iMessage to RCS order is not stated	PartialDocs describe SMS fallback, and the service field can report rcs. The transport cannot be chosen.
Outbound-first messaging	SupportedSend SMS creates or resumes a conversation on any channel	PartialDedicated lines can start chats, up to 40 new recipients a day. Shared service needs the human to text first.
Calls on the iMessage number	Not listed	SupportedAgents place and receive voice calls over shared and dedicated iMessage lines.
Other channels
SMS	SupportedEnterprise plans and the Agent Phone Plan; US numbers need A2P registration	SupportedSMS and MMS on dedicated VoIP numbers, US and Canada included. Group MMS is beta.
RCS	PartialEnterprise only, enabled by your account executive	PartialOnly as a transport reported on iMessage lines; not a channel you can pick.
WhatsApp	PartialEnterprise only; a channel value on the Messaging API, no setup guide in the docs	Not supportedNot offered
Telegram	Not supportedNot offered	Not supported
Slack	Not supportedNot a messaging channel; Slack is listed only as a tool integration	BetaSlack is in beta: read, reply, files and retained history search.
Email	Not supportedNot offered as a messaging channel	SupportedEach identity gets a mailbox, with custom domains and IMAP/SMTP access.
Phone calls	SupportedCore product: inbound and outbound AI phone calls, plus SIP	SupportedInbound and outbound calls with your own WebSocket agent or Inkbox Voice AI (beta).
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	PartialOne identity and one webhook subscription across channels, but separate APIs per channel.
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@inkbox/sdk
Python SDK	Not listed	Supportedinkbox on PyPI
Other SDKs	Not listed	SupportedRust SDK (inkbox crate).
CLI	Supportedbland-cli on npm	Supported@inkbox/cli
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 with a per-identity signing key.
MCP server	SupportedHosted MCP server; personal agents connected to it can place calls and send texts	SupportedRemote Streamable HTTP endpoint at inkbox.ai/mcp, with a separate ChatGPT endpoint.
Open source	Not supportedClosed platform	PartialSDK, CLI, skills and examples are MIT on GitHub. The service is closed.
Self-hosting	PartialEnterprise: your own VPC, on-premises or air-gapped deployments	Not listed
Local testing	SupportedPathway Chat API and Testbed run agent conversations without a phone	Not listed
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	SupportedDelivery log with replay. Incoming-call and Slack deliveries cannot be replayed.
OpenTelemetry	Not listed	Not listed
No-code integrations	SupportedZapier, Make and Pipedream on the integrations page	Not listed
CRM integrations	SupportedHubSpot and Salesforce	Not listed
Built for AI agents
Agent framework	SupportedPathways, personas and versioned agents drive voice and every messaging channel	PartialIdentity layer with contact memories across email, texts and calls. No conversation framework.
Agent framework integrations	PartialMCP guides for OpenClaw, Poke, Meta Muse and coding agents; no LangChain or Vercel AI SDK	SupportedPlugins for Hermes Agent, OpenClaw, OpenCode, Codex, Claude Code and DeepSeek Harness.
Streaming replies	Not listed	Not listed
Agent group chats	Not listed	Not listedAgents can reach each other over A2A tasks, but not in group chats.
Human handoff	SupportedHand a thread to a human and resume the agent, by API or a pathway node	PartialPeople can reply from the Console, and Voice AI can transfer a call. No handoff controls for agents.
Audit logs	PartialEnterprise feature, not yet available for all accounts	Not listed
Message history API	SupportedList and read conversations with messages and delivery status	SupportedList and read conversations and threads, with search on texts and email.
Plans and compliance
Free plan	PartialFree Start plan with credits is for voice; messaging needs Agent Phone Plan or Enterprise	SupportedFree: 3 identities, shared iMessage up to 2,000 messages a month and 3 recipients at a time.
Public pricing	PartialVoice plans and SMS rates are public; iMessage, RCS and WhatsApp prices are not	Supported
No per-message fees	PartialSMS costs $0.02 per message; the Agent Phone Plan is flat with a 100 texts a day cap	PartialiMessage is capped per plan with no per-message fee. Extra SMS/MMS and call minutes cost $0.03 each.
Uptime SLA	SupportedPricing page lists a 99.9% uptime SLA on every plan	Not listed
Isolated infrastructure	PartialEnterprise customers run on their own isolated infrastructure	PartialDedicated iMessage infrastructure is listed for Enterprise only.
SOC 2 Type II	SupportedSOC 2 Type II, independently audited	Not listed
GDPR	SupportedGDPR compliant, with a DPA in enterprise contracts	Not listedThe DPA names the CCPA only; GDPR is not mentioned.

Feature

Bland

Inkbox

iMessage messaging

iMessage

PartialEnterprise plans only; Bland provisions an iMessage-capable number on request

Shared router service on every plan, or a dedicated line from the Startup plan.

Group chats

Not listed

Dedicated lines only, 2 to 8 remote participants. Shared service is 1:1.

Group management

Not listed

PartialCreate a group by sending to 2 to 8 numbers. No add or remove member API in V1.

Group name and photo

Not listed

Mentions

Not listed

Tapbacks

Send and receive, per the iMessage guide; no API field, the agent decides

Send, replace and remove 7 tapbacks including eyes; inbound tapbacks arrive by webhook.

Threaded replies

Not listed

reply_to_message_id in 1:1 and group chats, with thread reads. Falls back to a plain reply.

Typing indicators

Listed in the iMessage guide

PartialSend only, in 1:1 chats. Groups and inbound typing events are not supported.

Read receipts

PartialSend read receipts in 1:1 chats. No read status for your own sent messages is documented.

Edit and unsend

Not listedAPI deletes stored messages from a conversation; unsend on the device is not mentioned

Not listed

Message effects

Not listed

4 bubble and 9 full-screen send styles, in 1:1 and dedicated-line groups.

Animated text effects

Guide lists text effects; which effects and how they are set is not documented

Not listed

Stickers

Live Stickers, per the iMessage guide

Not listed

Formatted text

Not listed

Attachments

Photos, videos, PDFs and spreadsheets both ways; agents can generate files to send

One media item per message, uploads up to 10 MiB. No media before the recipient's first reply.

Live Photos

Not listed

Rich link previews

Not listed

Voice messages

Send and receive voice memos; inbound memos are transcribed

Not listed

Contact cards

Not listed

PartialThe router sends the agent's contact card on connect. Sending other vCards is not documented.

Not listed

Not listed

Not listed

Not listed

Not listed

Sender name and photo

Branded contact with your company name and profile image

Dedicated lines share the identity's display name and avatar automatically.

FaceTime calls

Not listed

Not listedCalls run over iMessage lines, but the docs do not say whether they are FaceTime.

Delivery status

Guide lists delivery status; messages carry sent, delivered, read or failed

imessage.sent, imessage.delivered and imessage.delivery_failed webhooks, per recipient in groups.

iMessage availability check

Not listed

Returns iMessage, SMS or RCS for any E.164 number.

Focus and Notify Anyway

Not listed

Numbers and delivery

Managed lines

Bland provisions iMessage-capable numbers for Enterprise accounts

Shared router lines and dedicated lines run by Inkbox. No Mac needed.

Dedicated numbers

Agent Phone Plan includes one dedicated US number; Enterprise numbers by request

Startup plan includes one dedicated iMessage number. VoIP numbers for calls and SMS from Developer.

Shared numbers

PartialFree credits call from a shared Bland number; texting needs your own number

Free and paid plans include shared iMessage. The human must text the router first.

Bring your own number

PartialYour own Twilio numbers or SIP trunks for voice and SMS; not documented for iMessage

Not listed

Line pooling

PartialCustom Dialing picks numbers from a pool for outbound calls only

BetaOrganization-owned shared iMessage pools, beta and by request only.

SMS fallback

Uses the richest channel the recipient supports and falls back to SMS

Inkbox tries iMessage first and can fall back to SMS; was_downgraded marks it.

RCS fallback

Not listedDocs say Bland picks the richest channel; an iMessage to RCS order is not stated

PartialDocs describe SMS fallback, and the service field can report rcs. The transport cannot be chosen.

Outbound-first messaging

Send SMS creates or resumes a conversation on any channel

PartialDedicated lines can start chats, up to 40 new recipients a day. Shared service needs the human to text first.

Calls on the iMessage number

Not listed

Agents place and receive voice calls over shared and dedicated iMessage lines.

Other channels

SMS

Enterprise plans and the Agent Phone Plan; US numbers need A2P registration

SMS and MMS on dedicated VoIP numbers, US and Canada included. Group MMS is beta.

RCS

PartialEnterprise only, enabled by your account executive

PartialOnly as a transport reported on iMessage lines; not a channel you can pick.

PartialEnterprise only; a channel value on the Messaging API, no setup guide in the docs

Not supportedNot offered

Not supported

Slack

Not supportedNot a messaging channel; Slack is listed only as a tool integration

BetaSlack is in beta: read, reply, files and retained history search.

Not supportedNot offered as a messaging channel

Each identity gets a mailbox, with custom domains and IMAP/SMTP access.

Phone calls

Core product: inbound and outbound AI phone calls, plus SIP

Inbound and outbound calls with your own WebSocket agent or Inkbox Voice AI (beta).

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

PartialOne identity and one webhook subscription across channels, but separate APIs per channel.

Developer tools

REST API

TypeScript SDK

PartialDocs list a Web Agent SDK for browser voice and a TTS library; no messaging SDK

@inkbox/sdk

Python SDK

Not listed

inkbox on PyPI

Other SDKs

Not listed

Rust SDK (inkbox crate).

CLI

bland-cli on npm

@inkbox/cli

Webhooks

Message and status webhooks per number or per request, with a channel field

Signed webhooks

HMAC-SHA256 in X-Webhook-Signature; asymmetric JWT signing on Enterprise

HMAC-SHA256 with a per-identity signing key.

MCP server

Hosted MCP server; personal agents connected to it can place calls and send texts

Remote Streamable HTTP endpoint at inkbox.ai/mcp, with a separate ChatGPT endpoint.

Open source

Not supportedClosed platform

PartialSDK, CLI, skills and examples are MIT on GitHub. The service is closed.

Self-hosting

PartialEnterprise: your own VPC, on-premises or air-gapped deployments

Not listed

Local testing

Pathway Chat API and Testbed run agent conversations without a phone

Not listed

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

Delivery log with replay. Incoming-call and Slack deliveries cannot be replayed.

OpenTelemetry

Not listed

No-code integrations

Zapier, Make and Pipedream on the integrations page

Not listed

CRM integrations

HubSpot and Salesforce

Not listed

Built for AI agents

Agent framework

Pathways, personas and versioned agents drive voice and every messaging channel

PartialIdentity layer with contact memories across email, texts and calls. No conversation framework.

Agent framework integrations

PartialMCP guides for OpenClaw, Poke, Meta Muse and coding agents; no LangChain or Vercel AI SDK

Plugins for Hermes Agent, OpenClaw, OpenCode, Codex, Claude Code and DeepSeek Harness.

Streaming replies

Not listed

Agent group chats

Not listed

Not listedAgents can reach each other over A2A tasks, but not in group chats.

Human handoff

Hand a thread to a human and resume the agent, by API or a pathway node

PartialPeople can reply from the Console, and Voice AI can transfer a call. No handoff controls for agents.

Audit logs

PartialEnterprise feature, not yet available for all accounts

Not listed

Message history API

List and read conversations with messages and delivery status

List and read conversations and threads, with search on texts and email.

Plans and compliance

Free plan

PartialFree Start plan with credits is for voice; messaging needs Agent Phone Plan or Enterprise

Free: 3 identities, shared iMessage up to 2,000 messages a month and 3 recipients at a time.

Public pricing

PartialVoice plans and SMS rates are public; iMessage, RCS and WhatsApp prices are not

No per-message fees

PartialSMS costs $0.02 per message; the Agent Phone Plan is flat with a 100 texts a day cap

PartialiMessage is capped per plan with no per-message fee. Extra SMS/MMS and call minutes cost $0.03 each.

Uptime SLA

Pricing page lists a 99.9% uptime SLA on every plan

Not listed

Isolated infrastructure

PartialEnterprise customers run on their own isolated infrastructure

PartialDedicated iMessage infrastructure is listed for Enterprise only.

SOC 2 Type II

SOC 2 Type II, independently audited

Not listed

GDPR

GDPR compliant, with a DPA in enterprise contracts

Not listedThe DPA names the CCPA only; GDPR is not mentioned.

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

Pricing

Bland

Voice plans are Start (free, $0.14 a minute), Build ($299 a month) and Scale ($499 a month); SMS is $0.02 per message; the Agent Phone Plan is $29.99 a month for one number; iMessage, RCS and WhatsApp need a custom Enterprise contract.

Pricing model: per-minute voice, per-message SMS, custom Enterprise contracts

Source

Inkbox

Free covers 3 identities with shared iMessage; Developer is $25 a month with a VoIP number; Startup is $167 a month with one dedicated iMessage number; Enterprise is custom. SMS/MMS and call minutes over allowance cost $0.03 each.

Pricing model: monthly plans with allowances, plus per-unit SMS/MMS and call-minute overage

Source