Same WhatsApp channel, very different jobs.

Flowella turns your HubSpot forms into WhatsApp Flows and writes each completed one back as a HubSpot form submission. Sinch Engage sends SMS, MMS, RCS and WhatsApp from HubSpot workflows and its own team inbox. Both connect to HubSpot. They’re built for different jobs.

Flo, the Flowella mascot, looking through a magnifying glass at two cards she holds side by side, one with a green tick

Flowella and Sinch Engage at a glance

Checked 16 October 2026

Flowella

HubSpot forms as WhatsApp Flows

With HubSpot from
$79 a month, on Starter19
WhatsApp’s fees
Billed by Meta, at Meta’s rates20
WhatsApp Flows
Unlimited, on every plan19

Sinch Engage

SMS, RCS and WhatsApp messaging

With HubSpot from
$99 a month billed annually (US), plus a WhatsApp add-on13
WhatsApp’s fees
Meta’s rates, plus a Sinch fee per message2
WhatsApp Flows
Templates only, with reply and link buttons8

The eleven things that matter.

Each line about Sinch Engage links to Sinch’s own pages or its HubSpot Marketplace listing, checked on 16 October 2026. Where Sinch Engage does more, the table says so.

Flowella and Sinch Engage, line by lineShaded rows matter most if HubSpot is your system of record.
What matters Flowella Sinch Engage
Your HubSpot forms become WhatsApp FlowsPick a form you already use: its fields, validation and labels carry over.
FlowellaYes.

Pick a HubSpot form and Flowella builds the Flow from it.22

Sinch EngageNo.

Sinch Engage sends Meta-approved templates from HubSpot, and its templates offer quick-reply and call-to-action buttons, not Flows.48

Completed Flows arrive as HubSpot form submissionsSo form-submission workflows, lead scoring and reports run as they do for web forms.
FlowellaYes.

Written back as a native form submission, with the answers on contact properties.21

Sinch EngageNo.

Messages are logged on the HubSpot contact timeline, and contact sync runs one way, from HubSpot to Sinch Engage.10

WhatsApp Flows you can runHow many Flows each plan includes.
FlowellaYes.

Unlimited, on every plan.19

Sinch EngageNo.

None described: its help centre covers WhatsApp templates with quick-reply and call-to-action buttons.8

WhatsApp’s fees at Meta’s own ratesWho bills each message, and at what rate. Example: one marketing message to a UK number.
FlowellaYes.

Meta bills you directly, at its list rate of $0.0635. Flowella never marks it up; its own fee is per billable message over your plan’s allowance.1720

Sinch EngageYes.

Meta’s fee at Meta’s rate, plus a separate Sinch fee once the add-on’s 1,000 messages a month are used: $0.05 a message in the US.21

Send WhatsApp from HubSpot workflowsFlowella’s workflow actions need HubSpot Professional or Enterprise.
FlowellaYes.

Six workflow actions, such as Send WhatsApp Template, and four triggers, such as Form Completed.23

Sinch EngageYes.

A Send WhatsApp action for approved templates, and a WhatsApp Message Received trigger.45

A shared inbox for repliesWhere your team reads and answers WhatsApp.
FlowellaYes.

The Flowella app inbox, or WhatsApp threads in the HubSpot conversations inbox through the Flowella channel.2524

Sinch EngageYes.

Sinch Engage’s team inbox, plus WhatsApp replies from the HubSpot contact record. SMS and MMS can also join the HubSpot inbox.1167

Keep the WhatsApp Business AppCoexistence: the app and the platform share one number.
FlowellaYes.

Supported. Keep the app for one-to-one chats.26

Sinch EngageNo.

Its WhatsApp set-up asks for a number that isn’t connected to a WhatsApp account.9

Channels beyond WhatsAppSMS, RCS and social channels from the same platform.
FlowellaNo.

WhatsApp only, across one or more numbers in one account.27

Sinch EngageYes.

SMS, MMS and RCS, plus Facebook Messenger and Instagram in the social channels add-on.112

CRMs and shops besides HubSpotFor teams who run more than one system.
FlowellaNo.

HubSpot is Flowella’s one integration today.28

Sinch EngageYes.

Salesforce, Zoho CRM, NetSuite, Microsoft Dynamics, Shopify and more, as well as HubSpot.12

Chatbots and AI agentsAutomatic replies when no one is free.
FlowellaPartly.

Flows collect the answers, and a HubSpot workflow can hand the chat to Breeze Customer Agent.23

Sinch EngageYes.

Sinch Engage AI agents answer from your documentation and hand off to your team.13

A free trialTry it before you pay.
FlowellaYes.

14 days, up to 5,000 outbound messages, with no card for Flowella.1920

Sinch EngageYes.

14 days, with no card.1

Partly means the tool does some of this, as the line explains. Prices are in US dollars, before tax.

The same answers, two ways.

Ask three questions in a WhatsApp Flow and the answers land in HubSpot as properties, ready for a workflow. Ask the same three in a chat and you get messages someone has to read and retype. Try both and watch the record.

Sample dataNothing you type leaves this page.

Flo slotting small data cards into a blue filing drawer, the way a Flow files each answer as a property
Jen OkaforHubSpot contact record
Sample data
What they needenquiry_type
From the FlowWaitingSet by the form submission
From the chatWaitingNeeds someone to read it
Team sizeteam_size
From the FlowWaitingSet by the form submission
From the chatWaitingNeeds someone to read it
Emailemail
From the FlowWaitingSet by the form submission
From the chatWaitingNeeds someone to read it

Timeline

Flow: 0 of 3 properties setChat: 0 of 3 properties set

Two solid products.

Sinch Engage is a good product, and in places it does more than Flowella. Here’s who each one is.

Flowella

Flowella turns HubSpot forms into WhatsApp Flows and writes each answer back to HubSpot. It’s from the team at Discover Digital, a HubSpot Platinum Partner.

Company
Flowella Limited, registered in the UK30
Built for
HubSpot, on every HubSpot plan, Free included21
WhatsApp Flows completed
100K+, by Flowella’s count32

Sinch Engage

Sinch Engage, formerly MessageMedia, is the business messaging platform from Sinch, which started in 2008. It sends SMS, MMS, RCS and WhatsApp from one inbox and from tools such as HubSpot.

Company
Sinch Sweden AB in Europe, part of Sinch AB (publ)315
Customers
70,000+ businesses on Sinch Engage, by Sinch’s count3
The Sinch group
200,000+ customers and 4,000+ employees, by its count14

Three tools, three jobs.

Pick by the job you need done. HubSpot’s own WhatsApp channel is the third option, and for some teams it’s enough.

Flo pointing along one of three signposts, in green, sky blue and coral
  • Flowella

    Choose Flowella if you want WhatsApp answers as HubSpot data.

    • Your HubSpot forms should become WhatsApp Flows.
    • Answers should arrive as form submissions and properties, not chat text.
    • You want Meta to bill its fees to you directly, at its own rates.
    • Your team replies in HubSpot, or in a focused WhatsApp inbox.

    Sources22212024

  • Sinch Engage

    Choose Sinch Engage if text messages are your main channel.

    • You send SMS, MMS and RCS as well as WhatsApp.
    • Your team wants SMS and MMS in the HubSpot inbox.
    • You run campaigns and reminders from HubSpot workflows.
    • HubSpot is one of several systems you connect, such as Salesforce or NetSuite.

    Sources1274

  • HubSpot’s own channel

    Choose HubSpot’s own WhatsApp channel if inbox replies are enough.

    • You have Marketing Hub or Service Hub, Professional or Enterprise.
    • 1,000 template messages a month is enough, shared by all your connected WhatsApp Business accounts.
    • Your team replies from the conversations inbox.
    • Message details in conversation properties are all your workflows need.

    Source18

Questions teams ask.

Four questions HubSpot teams put to us, answered for both tools.

Can a completed WhatsApp form start a HubSpot workflow?

Flowella

Yes. Each completed Flow arrives as a native HubSpot form submission, with the answers on contact properties, so form-submission enrolment works as it does for web forms. Flowella adds a Form Completed trigger too. Workflows need HubSpot Professional or Enterprise.2123

Sinch Engage

Sinch Engage’s help centre doesn’t describe WhatsApp Flows. A WhatsApp Message Received trigger can enrol contacts in a HubSpot workflow, filtered on the words in the reply or on the workflow that sent the message.58

Can our team reply from the HubSpot inbox?

Flowella

Yes. Connect the Flowella channel and WhatsApp threads land in the HubSpot conversations inbox, beside email, chat and calls. It needs Sales Hub or Service Hub, Professional or Enterprise, and HubSpot Credits may apply. The Flowella app inbox works on any plan.2425

Sinch Engage

SMS and MMS can join the HubSpot inbox, on Sales Hub or Service Hub Professional or Enterprise. WhatsApp replies go from the contact record’s conversation view, or from Sinch Engage’s own inbox.7611

Do we have to give up the WhatsApp Business App?

Flowella

No. Flowella supports coexistence: keep the app for one-to-one chats while Flows and templates run on the same number.26

Sinch Engage

Sinch Engage’s WhatsApp set-up asks for a number that isn’t already connected to a WhatsApp account, and its help centre doesn’t describe coexistence.9

What would a seven-person team sending 25,000 templates a month pay?

Flowella

Pro is $199 a month with 2,500 billable messages, then $0.04 each. Meta bills its own fees to you, at its list rate.1917

Sinch Engage

In the US, Basics is $99 a month billed annually ($119 monthly) with 1 user, then $25 for each extra user. WhatsApp needs the $10 social channels add-on: 1,000 messages a month, then $0.05 each, plus Meta’s fee. A UK business sees Basics at £35 a month and a £35 add-on.12

Two good verdicts.

Both apps are rated highly on the HubSpot Marketplace, so read the reviews from teams doing the job you have.

Sinch Engage on the HubSpot Marketplace

4.4

Out of 5, from 67 ratings for Sinch’s HubSpot app, Sinch Engage SMS. Checked on 16 October 2026.3

Read Sinch Engage’s reviews on the HubSpot Marketplace (opens in a new tab)

Exceptional engagement platform that transformed our student conversion with 160% increase in same-day applications and 90% WhatsApp response rates.

Peter Hudson Peter HudsonDirector of Admissions, Brand & Customer Innovation, Oaklands CollegeHubSpot Marketplace integration Oaklands College

Straight answers.

Spotted something out of date? Tell us and we’ll check it and fix it.

Book a demo
Is this comparison fair?

We’ve tried to make it so. Every fact about Sinch Engage links to Sinch’s own pages or its HubSpot Marketplace listing, checked on 16 October 2026. Sinch Engage does more than Flowella in places, such as SMS, RCS and other channels, AI agents and CRMs beyond HubSpot, and the table says so. Its prices depend on where your business is based, so we give them in words rather than in a calculator.

Can Sinch Engage turn a HubSpot form into a WhatsApp Flow?

Sinch Engage’s help centre describes sending Meta-approved WhatsApp templates from HubSpot workflows and the contact record, with quick-reply and call-to-action buttons. It doesn’t describe WhatsApp Flows. Flowella starts from the HubSpot form you already have. Source 4, source 8, source 22.

Who bills WhatsApp’s message fees?

With Flowella, Meta bills you directly, at Meta’s list rates, and Flowella never marks them up. Flowella’s own bill is your plan plus any billable messages over its allowance.

With Sinch Engage, each WhatsApp message carries Meta’s fee and a separate Sinch fee, and both appear in your Sinch usage. The social channels add-on includes 1,000 messages a month, then the Sinch fee is $0.05 a message in the US and £0.045 in the UK. Source 20, source 17, source 2, source 1.

What does Sinch Engage cost?

Sinch prices Engage by where your business is based. In the US, plans run from Basics at $99 a month billed annually ($119 monthly) to Advanced at $2,399, each with an SMS allowance and 1 to 3 users. In the UK, from Basics at £35 a month to Advanced at £879. WhatsApp is an add-on on every plan. Source 1.

Which plans connect to HubSpot?

Every Flowella plan, from Starter. Forms to Flows works on every HubSpot plan, Free included; Flowella’s workflow actions need HubSpot Professional or Enterprise. Sinch’s HubSpot app works with every Sinch Engage plan, from Basics, and WhatsApp needs its social channels add-on. Source 21, source 23, source 3, source 1.

What about data residency for UK and EU buyers?

Flowella hosts Starter and Pro customers in Microsoft Azure’s UK South region, in London, and Enterprise customers can be hosted elsewhere by arrangement. Sinch’s sub-processor list names Amazon Web Services hosting for Sinch Engage in Ireland and in Australia, and Sinch Engage is provided in Europe by Sinch Sweden AB. Whichever you choose, check the vendor’s data processing terms. Source 29, source 16, source 3.

What is Sinch Engage best at?

Text messaging at scale: SMS, MMS and RCS alongside WhatsApp; campaigns and reminders from HubSpot, Salesforce, NetSuite and other systems; SMS in the HubSpot inbox; and AI agents that answer your customers. If that’s your job, Sinch Engage is built for it. Source 12, source 7, source 13.

Can we use Flowella alongside Sinch Engage?

Yes. Sinch Engage can carry your SMS and RCS while Flowella runs WhatsApp Flows. For WhatsApp itself, each number sits with one provider at a time, and moving a number from one to the other is a migration. Source 31.

Sources.

Every source was checked on 16 October 2026. Prices change, so check each vendor’s site before you buy.

  1. Sinch Engage pricing (opens in a new tab)

    Plans by where your business is based (US in dollars, UK in pounds), users, the WhatsApp add-on and its allowance, and the 14-day trial.

    Checked 16 October 2026
  2. Sinch help: how WhatsApp pricing works (opens in a new tab)

    Meta’s fee and a separate Sinch fee on every WhatsApp message, both in your usage.

    Checked 16 October 2026
  3. Sinch Engage SMS on the HubSpot Marketplace (opens in a new tab)

    Works with every Sinch Engage plan; WhatsApp replies from the contact page; 4.4 from 67 ratings.

    Checked 16 October 2026
  4. Sinch help: WhatsApp in HubSpot workflows (opens in a new tab)

    A Send WhatsApp action for Meta-approved templates, in contact-based workflows.

    Checked 16 October 2026
  5. Sinch help: workflows from WhatsApp replies (opens in a new tab)

    A WhatsApp Message Received trigger, filtered on the reply or the workflow that sent the message.

    Checked 16 October 2026
  6. Sinch help: messages from the HubSpot contact record (opens in a new tab)

    WhatsApp from the contact record: free-form replies within 24 hours, templates to start a chat.

    Checked 16 October 2026
  7. Sinch help: SMS and MMS in the HubSpot inbox (opens in a new tab)

    SMS and MMS as inbox channels, on Sales Hub or Service Hub Professional or Enterprise.

    Checked 16 October 2026
  8. Sinch help: create a WhatsApp template (opens in a new tab)

    Template buttons: quick reply and call to action.

    Checked 16 October 2026
  9. Sinch help: connect WhatsApp (opens in a new tab)

    The social messaging add-on, and a number that isn’t connected to a WhatsApp account.

    Checked 16 October 2026
  10. Sinch help: HubSpot contact sync (opens in a new tab)

    One-way sync from HubSpot to Sinch Engage, with messages on the HubSpot timeline.

    Checked 16 October 2026
  11. Sinch help: the Sinch Engage inbox (opens in a new tab)

    The team inbox, with assignment to users.

    Checked 16 October 2026
  12. Sinch Engage homepage (opens in a new tab)

    How Sinch describes Sinch Engage, its channels and its native integrations.

    Checked 16 October 2026
  13. Sinch Engage AI features (opens in a new tab)

    AI agents that answer from your documentation and hand off to your team.

    Checked 16 October 2026
  14. Sinch: about us (opens in a new tab)

    Started in 2008; the size of the Sinch group, by its account.

    Checked 16 October 2026
  15. Sinch privacy notice (opens in a new tab)

    Sinch AB (publ) and its subsidiaries.

    Checked 16 October 2026
  16. Sinch sub-processors (opens in a new tab)

    Amazon Web Services hosting for Sinch Engage in Ireland and in Australia.

    Checked 16 October 2026
  17. Meta: pricing on the WhatsApp Business Platform (opens in a new tab)

    List rates in US dollars from 1 October 2026. UK: marketing $0.0635, utility $0.022.

    Checked 16 October 2026
  18. HubSpot: connect WhatsApp to the conversations inbox (opens in a new tab)

    HubSpot’s own channel: the hubs it needs and its 1,000 template messages a month.

    Checked 16 October 2026
  19. Flowella pricing

    Starter $79 and Pro $199 a month, allowances, overage rates, unlimited Flows, a trial with no card, and Enterprise from 100,000 billable messages a month.

    Checked 16 October 2026
  20. Flowella knowledge base: plans, limits and billing

    The trial, overage, and Meta’s fees billed directly by Meta, never marked up.

    Checked 16 October 2026
  21. Flowella on the HubSpot Marketplace (opens in a new tab)

    Native form submissions, every HubSpot plan, and the rating.

    Checked 16 October 2026
  22. Flowella knowledge base: Flows

    How HubSpot forms become WhatsApp Flows.

    Checked 16 October 2026
  23. Flowella knowledge base: HubSpot workflow actions

    Six actions and four triggers, and the HubSpot plans they need.

    Checked 16 October 2026
  24. Flowella knowledge base: the HubSpot inbox channel

    WhatsApp in the HubSpot conversations inbox, and what it needs.

    Checked 16 October 2026
  25. Flowella inbox

    The Flowella app inbox and the HubSpot inbox.

    Checked 16 October 2026
  26. Flowella knowledge base: coexistence

    Keeping the WhatsApp Business App on the same number.

    Checked 16 October 2026
  27. Flowella multi-channel

    Several WhatsApp numbers in one account.

    Checked 16 October 2026
  28. Flowella integrations

    HubSpot first; others coming soon.

    Checked 16 October 2026
  29. Flowella knowledge base: data security

    Infrastructure in Microsoft Azure’s UK South region.

    Checked 16 October 2026
  30. Flowella privacy policy

    Flowella Limited, registered with Companies House in the UK.

    Checked 16 October 2026
  31. Meta: migrating a number between providers (opens in a new tab)

    How a business number moves from one provider to another.

    Checked 16 October 2026
  32. Flowella for HubSpot

    100K+ WhatsApp Flows completed, by Flowella’s count.

    Checked 16 October 2026

Sinch Engage’s name and logo are used only to identify the product compared. Flowella figures come from Flowella’s own pages and its approved results.

Flo jumping for joy with her fist in the air and a phone in her hand

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