Brevo Integration for Marketing Analytics: Email Campaign Performance in Your Daily Briefing

Brevo Integration for Marketing Analytics: Email Campaign Performance in Your Daily Briefing

The Prooflytics Brevo integration connects your email campaign performance to your broader marketing intelligence - so the daily AI briefing includes Brevo open rates, click-through rates, conversions, and list health alongside Meta Ads, Google Ads, and other connected channels. Email is often the highest-ROI channel in a marketing mix; it's rarely measured with the same discipline as paid.

Brevo (formerly Sendinblue) is a mid-market email and SMS marketing platform with strong automation capabilities. The Prooflytics integration works with Brevo's campaign API to pull performance data without requiring data exports or manual reconciliation.

Key takeaways

Hard Bounce Rate Above Two Percent Signals Active Deliverability Damage

ISPs use bounce rates to classify sending domains as spam sources, with effects that compound across future campaigns. A hard bounce rate above 2% per campaign is not a list health warning - it is deliverability damage in progress that will reduce inbox placement for all subsequent sends.

Email Consistently Delivers the Highest ROI but Rarely Receives the Same Measurement Discipline as Paid

Connecting Brevo campaign performance to paid acquisition data in the same briefing enables true blended cost-per-revenue analysis. Without this connection, email's ROI goes unmeasured while paid channels receive full attribution scrutiny.

Rising Unsubscribe Rate Trend Over Ninety Days Signals List-Audience Mismatch

A rising trend signals that recent list growth - often from a paid lead magnet - is bringing in contacts whose expectations do not align with the email content they subsequently receive. The lead magnet attracted the audience; the unsubscribe trend reveals whether the audience was the right one.

Click-to-Open Rate Is a Content Quality Signal Independent of List Size or Send Frequency

A stable open rate with declining click-to-open rate indicates subject lines are maintaining relevance but email body content is losing effectiveness. The fix is in the content and CTAs, not in the send time or list segmentation.

Contact Growth Rate by Source Enables Cost-Per-Subscriber Calculation by Channel

When combined with engagement metrics per source cohort, cost per subscriber reveals whether paid list-building is acquiring engaged subscribers or inflating list size with low-engagement contacts. The two situations require different marketing responses.

What data Prooflytics pulls from Brevo

Campaign performance metrics

• Opens, unique opens, and open rate per campaign
• Clicks, unique clicks, and click-through rate
• Unsubscribes and spam complaints per campaign
• Soft and hard bounce rates - a leading indicator of list health degradation

Conversion data

• Conversion events from Brevo transactional campaigns (requires Brevo tracking setup)
• Revenue attributed to email campaigns (if Brevo e-commerce tracking is configured)
• Click-to-open rate - a quality metric for subject line vs content alignment

List and segment health

• Active subscriber count trend over 30 and 90 days
• Unsubscribe rate trend - rising unsubscribes signal list-audience mismatch
• Contact growth rate (new subscribers vs unsubscribes)
• Engagement tier breakdown: highly engaged, occasionally active, inactive

Automation metrics

• Workflow trigger volume - how often each automation fires
• Automation open and click rates vs broadcast campaign benchmarks
• Drip sequence completion rates

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What you can do once Brevo is connected

Compare email CPL to paid channel CPL. When email drives lead conversions (event registrations, demo requests, trial signups), Prooflytics calculates email CPL based on Brevo send volume and your email platform cost, and compares it to Meta and Google CPL in the same briefing. For most B2B SaaS teams, email CPL is 4-8× lower than paid social CPL - but most teams don't have this comparison in a single view.

Detect list health degradation before deliverability is affected. A hard bounce rate above 2% or an unsubscribe rate above 0.5% are signals that list quality is declining. If these rates are rising trend over 30 days, deliverability will be affected within 60-90 days. Prooflytics tracks these trends and flags them as attention signals in the daily briefing - before you hit Gmail or Outlook inbox rate problems.

Correlate email sends with paid performance. Email and paid channels interact: a retargeting email sent to warm prospects the week before a paid ad push can increase paid conversion rates by 30-50%. Prooflytics shows the overlap window - if your email send and a paid campaign ran in the same week, the briefing notes the co-occurrence so you can analyse whether the combination outperformed either channel alone.

Track automation ROI vs broadcast campaigns. Most email platforms show automation and broadcast metrics separately. Prooflytics aggregates both and shows revenue per email sent across all Brevo campaign types - so you can determine whether your welcome sequence is outperforming or underperforming your promotional broadcast campaigns.

Brevo users who expand beyond email into SMS typically find they need a single engagement rate baseline across all channels - which is easier to calculate when Segment or GA4 is connected alongside Brevo in Prooflytics to attribute conversion events back to the right send. Teams evaluating Brevo against Mailchimp or ActiveCampaign can connect all three during the evaluation period to compare deliverability, click rates, and revenue attribution side by side.

Constant Contact users face the same benchmark gap: the platform shows engagement inside the inbox but does not connect campaigns to revenue or pipeline outcomes. Teams running Constant Contact alongside Brevo - or evaluating a switch - can connect both to Prooflytics and compare performance using the same benchmark framework. For the Constant Contact-specific integration setup, see the Constant Contact marketing analytics guide.

Email performance and the 252-company benchmark

Industry research across 252 companies with $53B in combined marketing spend found that email marketing is consistently underinvested in relative to its measured ROI - the average company allocates 12% of budget to customer retention (the primary use case for email) vs 52% to sales stimulation (primarily paid acquisition). Top-quartile companies treat email as a systematic retention and reactivation channel with the same measurement rigour as paid.

For Brevo users, this means measuring email campaigns by the same metrics used for paid: CPL (for lead-gen campaigns), trial conversion rate (for SaaS onboarding sequences), and revenue per send (for e-commerce campaigns). Prooflytics surfaces Brevo performance in the same briefing as paid channels - so budget decisions about email vs paid are made on comparable data, not on the assumption that email is "free" (it isn't, when you account for copywriter time and list acquisition cost).

Prooflytics flags when email engagement drops for a segment that is also being targeted by paid retargeting - email fatigue in that segment will reduce paid retargeting performance, and the briefing shows both signals together.

How to connect Brevo to Prooflytics

1. Go to Settings to Data Sources in your Prooflytics dashboard
2. Find Brevo in the Marketing section and click Connect
3. In Brevo, go to Account to SMTP & API to API Keys and generate a new API key
4. Copy the API key into Prooflytics
5. Select which Brevo sender accounts to include in your briefing
6. Brevo data appears in your next morning briefing

Permissions required: Brevo API key with campaign read access. The default API key type includes all read permissions - no special configuration is needed.

Most common issue: if you see campaign data but no conversion metrics, Brevo conversion tracking requires the Brevo tracking code to be installed on your website (similar to Meta Pixel). Without the tracking code, Prooflytics shows open and click data but not post-click conversions. Install the Brevo tracker under Contacts to Segments to Tracking in your Brevo account.

Sync frequency: Brevo data syncs daily at 04:00 UTC.

Bottom line

• Email alongside paid in one briefing - open rates, CTR, and conversions next to Meta and Google spend
• List health monitoring - bounce and unsubscribe trends flagged before deliverability degrades
• Email CPL benchmarked against paid CPL - data-driven argument for email investment
• Automation vs broadcast comparison - see which email type produces better revenue per send

You can read independent reviews of Prooflytics on G2 and compare it to alternatives in the marketing analytics category.

Connect Brevo at Settings to Data Sources to Brevo or start a 14-day free trial to add email performance to your daily marketing intelligence.