InboxGreen vs Brevo (Sendinblue)
Email marketing platform vs email authentication diagnostics — why your Brevo emails may still go to spam.
Short answer: Brevo (formerly Sendinblue) is an email marketing and CRM platform — you use it to send campaigns, transactional emails, and SMS. InboxGreen checks and fixes the DNS records (SPF, DKIM, DMARC) that determine whether those Brevo emails actually reach the inbox. These tools do different jobs and most Brevo users need both.
Brevo (Sendinblue)
Email marketing and CRM platform
Send campaigns, transactional emails, SMS, and WhatsApp messages. Includes a CRM, landing pages, live chat, and marketing automation.
Free: 300 emails/day, unlimited contacts
Paid from $9/month
InboxGreen
Email authentication diagnostics
Check SPF, DKIM, and DMARC for your sending domain. Get copy-paste DNS fix records so Brevo emails reach the inbox instead of spam.
Free check — no account needed
FixKit $29 one-time — Monitor from $19/mo
Feature comparison
| Feature | InboxGreen | Brevo |
|---|---|---|
| Send email campaigns and transactional emails | No | Yes — marketing + transactional in one |
| Check SPF / DKIM / DMARC in DNS | Yes — free, instant, no account | No DNS authentication check |
| Generate copy-paste DNS fix records | Yes — formatted per DNS provider | No |
| DKIM setup for your sending domain | Checks + generates correct record | Provides TXT key, you publish it |
| DMARC monitoring and reporting | Daily checks, email alerts | No |
| Blacklist / reputation check | Yes — checks 50+ blacklists | No |
| SMS and WhatsApp campaigns | No | Yes — multi-channel |
| Built-in CRM | No | Yes — contact management, deals, tasks |
| Pricing model | Free check + $29 one-time FixKit | Free tier + monthly per email volume |
Setting up SPF and DKIM for Brevo
Brevo requires you to authenticate your sending domain before emails pass SPF and DKIM checks. Without this, your campaigns are more likely to land in spam — even if the content is clean.
SPF for Brevo
Add or merge Brevo's include into your SPF TXT record at the root of your domain:
The include name remains spf.sendinblue.com even after the rebrand to Brevo. If you also use other senders, merge all includes into one SPF record.
DKIM for Brevo
Go to Brevo → Senders & IPs → Domains → Add a domain. Brevo shows you a TXT record to publish at a specific selector._domainkey host.
Copy the exact values Brevo provides and publish them in your DNS panel. After publishing, click Authenticate in Brevo to verify.
Why Brevo emails go to spam
The most common reasons Brevo campaigns land in the spam folder:
- Domain not authenticated in Brevo — you need to add your domain under Senders & IPs → Domains and publish the provided DNS records.
- SPF missing or wrong — if spf.sendinblue.com is not in your SPF record, receiving servers can't verify Brevo is authorized to send on your behalf.
- DKIM not verified — you added the domain in Brevo but never published the TXT record in your DNS panel, or published it with a typo.
- No DMARC policy — even p=none tells inbox providers you are monitoring, which improves trust.
- Shared IP reputation — on Brevo's free tier, you share sending IPs. A dedicated IP (paid plans) gives you full control over your reputation.
When to use which tool
Use Brevo when:
- You need to send campaigns, automations, or transactional emails
- You want SMS or WhatsApp alongside email
- You need a built-in CRM at a low price point
- You want a free tier to start with no credit card
Use InboxGreen when:
- Your Brevo emails are going to spam
- You want to verify SPF, DKIM, DMARC are set up correctly
- You need copy-paste DNS records for Brevo authentication
- You want daily monitoring with alerts if DNS breaks
Free Deliverability Scan
Check SPF, DKIM, DMARC and List-Unsubscribe for your domain in seconds.