Brevo (Sendinblue)KayakoBrevo (Sendinblue) vs Kayako

Brevo (Sendinblue) vs Kayako: marketing platform with a chat inbox or help desk

A marketing platform with a chat inbox against a help desk: one prints a price and one quotes. The six differences, what five people pay on each, and a third option.

By Khalid Nouri, founder of SellioPricing check dates are listed with each vendor below

Try the third optionSellio pricing

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The short answer

Pick Brevo (Sendinblue) if you already send campaigns from Brevo and want the same contacts in the inbox. Pick Kayako if you want an AI agent billed only per resolved ticket, with no seat fee. For five people it is $75 a month on Brevo (Sendinblue), and a quote on Kayako, before AI; Sellio Mini is $45 for the workspace. Brevo (Sendinblue) and Kayako both include website chat in the price; only Brevo (Sendinblue) has WhatsApp and Instagram; only Kayako has email. Neither Brevo (Sendinblue) nor Kayako includes Telegram outright. Below, a third option for a team of two to ten that wants what Brevo (Sendinblue) and Kayako sell here at one price.

At a glanceBrevo (Sendinblue)Brevo (Sendinblue)KayakoKayako
Built aroundEmail campaigns · Conversations is a moduleTickets and a customer journey · AI billed per resolution
Entry plan$0 · Conversations Free: 1 seatQuote · Kayako One
Chat in the priceAbout $15/seat/mo · Conversations ProQuote · widget included
AI agentAura AI · drafts and summaries, no per-use price$1 per resolution · Kay AI Agent
Copilot for agentsAura AIIn Kay
Free planYes · one seat, one channelNone · talk to a pricing expert

The six differences that decide it

Everything else on this page follows from these.

  1. 01

    Where a conversation starts

    Brevo (Sendinblue)Brevo (Sendinblue)

    As a chat or a social message in the Conversations inbox, next to the contact's campaign history. Kayako raises a ticket where Brevo (Sendinblue) keeps a conversation.

    KayakoKayako

    As a ticket that shows the customer's journey across the site and past conversations. Brevo (Sendinblue) has no ticket queue behind its conversations.

  2. 02

    What the seat buys

    Brevo (Sendinblue)Brevo (Sendinblue)

    Conversations Pro is about $15 a seat; the marketing plans are priced by email volume, not seats. $75 for five people; Kayako prints no figure to set beside it.

    KayakoKayako

    No seat price is printed for Kayako One; older plans were $15 to $60 per agent. No figure for five people here; Brevo (Sendinblue) prints $75.

  3. 03

    How the AI is billed

    Brevo (Sendinblue)Brevo (Sendinblue)

    Aura AI drafts replies and summarises chats inside the plans; no AI agent is metered per conversation. Kayako meters AI ($1 per resolution) above the seats as well.

    KayakoKayako

    Kay, the AI agent, is $1 per resolved ticket, with no seat fee; escalations are not charged. Brevo (Sendinblue) meters AI (Aura AI) above the seats as well.

  4. 04

    Channels in the price

    Brevo (Sendinblue)Brevo (Sendinblue)

    Website chat, Messenger, Instagram, WhatsApp and email; no Telegram. WhatsApp and Instagram are here and not on Kayako.

    KayakoKayako

    Email, live chat, Messenger and X; no WhatsApp, Instagram or Telegram in the inbox. email is here and not on Brevo (Sendinblue).

  5. 05

    Beyond the inbox

    Brevo (Sendinblue)Brevo (Sendinblue)

    Email and SMS campaigns, marketing automation, a CRM and transactional email. Kayako is a help desk instead.

    KayakoKayako

    A help center, SLAs, automation rules and reporting. Brevo (Sendinblue) is a marketing platform with a chat inbox instead.

  6. 06

    Time to the first reply

    Brevo (Sendinblue)Brevo (Sendinblue)

    An afternoon: add the chat widget and connect the social pages. Kayako is a sales conversation, then a white-glove onboarding.

    KayakoKayako

    A sales conversation, then a white-glove onboarding. Brevo (Sendinblue) is an afternoon.

Sources: Brevo (Sendinblue) pricing · Kayako pricing. Each vendor’s own comparison of the other is linked so you can weigh both sides against ours.

What each one looks like

A look at the agent workspace. Interfaces can vary by plan and product version.

The Brevo Conversations inbox: the chat list beside the contact and campaign history
Brevo (Sendinblue)Brevo (Sendinblue). The Brevo Conversations inbox: the chat list beside the contact and campaign history
The Kayako conversation view: the ticket with the customer journey timeline beside it
KayakoKayako. The Kayako conversation view: the ticket with the customer journey timeline beside it

Pricing references: Brevo (Sendinblue) pricing page (recorded 2026-09-13; needs verification); Kayako pricing page (recorded 2026-09-13; needs verification). Prices change; confirm current terms with each vendor.

Brevo (Sendinblue), Kayako and Sellio, side by side

Fifteen things a support team checks. A dash means the product does part of it or charges extra for it.

FeatureBrevo (Sendinblue)Brevo (Sendinblue)KayakoKayakoSellio

Pricing

Pricing model
Per seat for the inbox; by volume for campaigns
Quote; AI per resolution
Per workspace; seats and channels are plan limits
Free plan
One seat, one channel
None
2 seats, 1 channel, 1 AI agent, no trial clock

Channels

Website live chat
Widget included
Widget included
One script tag; guides for HTML, React, Next.js and more
Email in the inbox
Campaign replies, not a ticket queue
Included
From Mini: forward your support address; reply from the thread
WhatsApp
In Conversations
Not offered
From Mini: WhatsApp Business API, several agents on one number
Instagram DMs
In Conversations
Messenger and X only
From Mini: Instagram DMs beside web chat
Telegram
Not offered
Not offered
From Mini: paste a bot token; the webhook is set for you
Slack, Discord, Teams (two-way)
Not offered
Slack integration
From Mini: two-way threads; a reply there reaches the customer

AI

AI agent trained on your docs
Chatbot scenarios; Aura AI drafts
Kay
Crawl your site, upload PDFs and FAQs; answers only from those
How AI is billed
Inside the plan
$1 per resolution
Metered from an included credit, with caps you set
AI hands off to a person
Scenario hands to an agent
Escalates free of charge
On low confidence, a keyword, or a teammate taking over

Support operations

Tickets
Conversations only
Ticket-first
On Plus: raise from any chat; customer, back-office and tracker
Visual workflow automation
Marketing automation, not support rules
Automation rules
From Mini: 11 triggers, 18 actions, no code
Analytics and CSAT
Campaign reports
Reporting
From Essentials: response times, resolution, CSAT; topics and email reports on Plus

Apps

Desktop app (Windows, macOS)
Browser and mobile
Browser only
Native Windows and macOS apps

Which one, for whom

Pick Brevo (Sendinblue) if

  • You already send campaigns from Brevo and want the same contacts in the inbox.
  • Marketing automation matters as much as support.
  • You need WhatsApp and Instagram in the price, which Kayako does not include outright.
  • You want a free plan to start on; Kayako offers no trial.

Pick Kayako if

  • You want an AI agent billed only per resolved ticket, with no seat fee.
  • A ticket view that shows the customer's journey matters to you.
  • You need email in the price, which Brevo (Sendinblue) does not include outright.
  • You need a ticket queue, which Brevo (Sendinblue) does not have.

The third option: Sellio

  • You are two to ten people on Brevo (Sendinblue) or Kayako who answer chat, messaging and email, and want to compare workspace pricing with $75 a month on Brevo (Sendinblue), and a quote on Kayako for five people.
  • You want the AI bill known before the month starts: Brevo (Sendinblue) meters AI (Aura AI) above the seats, Kayako meters AI ($1 per resolution) above the seats; Sellio includes a credit and lets you cap it.
  • You need Telegram and native Windows and macOS apps, which neither Brevo (Sendinblue) nor Kayako includes.

What two, five and ten people pay

Brevo (Sendinblue): $75 a month for five (5 seats × about $15); it does not print a per-seat rate to extend to two or ten. Kayako quotes per team, so two, five and ten people are three conversations with sales. Sellio: Free for two seats; Mini at $45 for five, $30 less than Brevo (Sendinblue) and against a quote on Kayako for five people; Essentials at $95 for ten, the AI credit included.

Where the two agree, and where they split

Brevo (Sendinblue) is a marketing platform with a chat inbox built around email campaigns; Kayako is a help desk built around tickets and a customer journey. Only Brevo (Sendinblue) has a free plan (one seat, one channel); Kayako offers no trial. Brevo (Sendinblue) and Kayako both include website chat in the price; only Brevo (Sendinblue) has WhatsApp and Instagram; only Kayako has email. Neither Brevo (Sendinblue) nor Kayako includes Telegram outright. Brevo (Sendinblue) (Aura AI) and Kayako ($1 per resolution) both meter AI above the seats. Kayako has tickets and Brevo (Sendinblue) does not, and neither Brevo (Sendinblue) nor Kayako ships a desktop app. Brevo (Sendinblue) is an afternoon; Kayako is a sales conversation, then a white-glove onboarding.

What each price leaves out

Brevo (Sendinblue): Aura AI drafts and summaries inside the plans; no per-conversation AI price. Kayako: Kay AI Agent $1 per resolved ticket; escalations and deflections are free. Beside Brevo (Sendinblue)'s Aura AI and Kayako's $1 per resolution, Sellio includes an AI credit with each paid plan. Usage consumes that credit; additional credits cost extra, and you can set a spending cap.

How these figures were read

Brevo (Sendinblue) does not print the figures above in a form a fetch can read (Conversations is priced per seat; the marketing plans by email volume. The page could only be read in a local currency, so the seat price is from Brevo's published summaries.), so they are marked unverified here beside Kayako's, and Brevo (Sendinblue)'s pricing page should be checked before you decide. Kayako does not print the figures above in a form a fetch can read (Seat prices are not printed; the AI agent is $1 per resolution. Older plans ran $15 to $60 per agent.), so they are marked unverified here beside Brevo (Sendinblue)'s, and Kayako's pricing page should be checked before you decide.

How to decide in an afternoon

  1. Step 1

    Count agents and channels

    Anyone who replies is a seat. List the channels customers actually use.

    5 people reply5 seats
    Website chat61%
    WhatsApp27%
    Email12%
  2. Step 2

    Price the AI you would use

    Estimate monthly conversations the AI could close, then apply each vendor's per-resolution or per-session rate.

    1,200 conversations × 40% AI closes480
    Brevo (Sendinblue)Brevo (Sendinblue)See vendorNot quoted
    KayakoKayakoSee vendorNot quoted
    Sellio$0.05$19

    Illustrative AI-only estimate; vendor units differ. Pack billing is rounded up. Sellio assumes Mini’s $5 credit and $0.05 per conversation.

  3. Step 3

    Trial the shortlist

    Check each vendor’s trial, free plan or demo terms. Where access is available, test one real channel before committing.

    Brevo (Sendinblue)Brevo (Sendinblue) · Free plan, no card
    KayakoKayako · None printed; book a session
    Sellio · Free plan, no card

    Confirm trial access and limits, then evaluate one real channel on each.

Continue your research

FAQ

Brevo (Sendinblue) vs Kayako: the questions people ask

Brevo (Sendinblue) is a marketing platform with a chat inbox built around email campaigns; Kayako is a help desk built around tickets and a customer journey. Kayako has tickets and Brevo (Sendinblue) does not, and neither Brevo (Sendinblue) nor Kayako ships a desktop app.

  • Entry plan: Brevo (Sendinblue) $0 (Conversations Free: 1 seat); Kayako Quote (Kayako One).
  • Chat in the price: Brevo (Sendinblue) About $15/seat/mo (Conversations Pro); Kayako Quote (widget included).
  • Sellio: one inbox for every channel: Telegram, which neither Brevo (Sendinblue) nor Kayako has outright, plus the rest of the five, on every paid plan.

The shared inbox page puts Sellio beside Brevo (Sendinblue) and Kayako on the same rows.

Still have a question? Contact us or browse the docs.

Or the third option: one price, every channel.

Sellio puts website chat, WhatsApp, Instagram, Telegram and email in one inbox with tickets and an AI agent, for $45 to $295 a month per workspace.

Get startedRead the docs

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