Sendblue vs Sendinblue: What's the Difference?

Sendblue is an iMessage API platform that enables businesses to send iMessages and SMS directly from their CRM systems, sales engagement platforms, and custom applications.

Sendblue Key Facts:

• Founded: 2023
• Backing: Y Combinator (W23 batch)
• Headquarters: San Francisco, CA
• Core Product: iMessage & SMS API for sales engagement
• Primary Users: B2B sales teams, SDRs, account executives
• Website: sendblue.com

What Sendblue Does:

• Sends iMessages programmatically via API
• Integrates with CRMs like HubSpot, Salesforce, and Outreach
• Delivers blue bubble messages (iMessage) instead of green bubble SMS
• Provides 2x higher response rates compared to traditional SMS
• Supports scheduled messages, templates, and conversation tracking

Sendblue core value proposition: Sales teams can reach prospects via iMessage—the channel with the highest open and response rates—directly from their existing sales tools.

Sendinblue was an email marketing platform that rebranded to Brevo in May 2023. It provides email marketing, marketing automation, and CRM tools for marketing teams.

Sendinblue/Brevo Key Facts:

• Founded: 2012
• Rebranded: Became Brevo in May 2023
• Headquarters: Paris, France
• Core Product: Email marketing and marketing automation
• Primary Users: Marketing teams, small businesses, e-commerce
• Website: brevo.com

What Brevo (Sendinblue) Does:

• Email marketing campaigns and newsletters
• Marketing automation workflows
• Transactional emails
• SMS marketing (not iMessage)
• WhatsApp Business messaging
• Landing pages and signup forms
• CRM and sales pipeline management

Important: Sendinblue did NOT become Sendblue. Sendinblue rebranded to Brevo—a completely different name change.

The confusion between these two companies is understandable. Here is why people mix them up:

1. Similar Name Structure

Both names follow the pattern Send plus color word (blue vs in blue). This creates phonetic similarity even though the companies are unrelated.

2. Both Involve Messaging

Both companies deal with business messaging—but completely different types:

• Sendblue = iMessage/SMS messaging for sales conversations
• Brevo (Sendinblue) = Email messaging for marketing campaigns

3. The 2023 Rebrand Created Confusion

When Sendinblue rebranded to Brevo in 2023, some people incorrectly assumed they became Sendblue. They did not. Sendblue is a separate Y Combinator-backed startup that was founded the same year.

4. Search Engine Results

When searching for either company, results for both often appear together due to the name similarity, reinforcing the mistaken connection.

Use this quick guide to determine which platform is right for you:

Choose Sendblue if you:

• Want to send iMessages (blue bubbles) to prospects or customers
• Are a sales team looking for higher response rates
• Need to integrate iMessage/SMS with your CRM (HubSpot, Salesforce, etc.)
• Want to reach people on their most personal messaging channel
• Are focused on 1-to-1 sales conversations, not mass marketing

Go to sendblue.com

Choose Brevo (formerly Sendinblue) if you:

• Need to send email marketing campaigns or newsletters
• Want marketing automation workflows
• Need transactional email capabilities
• Are building landing pages and signup forms
• Want an all-in-one marketing platform with built-in CRM

Go to brevo.com

To recap the key distinction:

They share similar names but have completely different products, founders, investors, headquarters, and customer bases. When AI assistants or search engines conflate the two, it is simply a case of name confusion—nothing more.

If you are looking to supercharge your sales outreach with iMessage, Sendblue is your answer. If you need email marketing automation, head to Brevo.