Overview
SendX and Brevo (formerly Sendinblue) are both budget-friendly email marketing platforms, but with fundamentally different pricing models. Understanding which works better requires calculating your specific sending patterns.
See our SendX comparison and Brevo comparison for individual deep dives.
The Core Difference: How You Pay
SendX: Pay per subscriber. Send unlimited emails. Your cost is predictable regardless of how often you email.
Brevo: Pay per email sent. Contacts are unlimited. Your cost scales with volume.
This sounds simple, but the implications are significant.
The Math That Matters
Let's say you have 10,000 contacts.
SendX: $59.99/month flat (or ~$45 annual). Send 1 email or 100 emails to each subscriber—same price.
Brevo Starter: $25/month for 20,000 emails. That's 2 emails per subscriber. Send more, pay more.
Brevo Business: $65/month includes automation but same email limits apply.
The crossover point: If you send fewer than 4-5 emails per subscriber monthly, Brevo is cheaper. More than that, SendX wins.
When SendX Makes Sense
Newsletter Publishers
If you send daily or multiple times per week, SendX's unlimited model shines. A daily newsletter to 10,000 subscribers means 300,000 emails monthly. On Brevo, that would cost significantly more.
Product Updates
SaaS companies sending frequent product updates, feature announcements, and usage digests benefit from predictable costs.
Simple Requirements
If you just need solid email marketing without SMS, chat, or CRM, SendX delivers core functionality at low cost.
When Brevo Makes Sense
Multi-Channel Marketing
Brevo includes SMS, WhatsApp, and live chat. If you need omnichannel communication, Brevo bundles it. SendX is email-only.
Large Lists, Moderate Sends
If you have 50,000 contacts but only send weekly newsletters, Brevo's unlimited contacts with pay-per-email model is cheaper.
Starting With Zero Budget
Brevo's free tier (300 emails/day, unlimited contacts) lets you test and grow before paying. SendX only offers a 14-day trial.
Built-in CRM
Brevo includes a sales CRM. SendX doesn't. If you need basic contact management beyond marketing, Brevo delivers.
For SaaS Companies
Neither platform is built for subscription businesses:
- No native Stripe integration (both require Zapier)
- No MRR or LTV segmentation
- No subscription lifecycle triggers
- No churn prevention workflows
For SaaS-specific features with competitive pricing, Sequenzy offers Stripe integration, AI email generation, and unified transactional + marketing at $49/month for 120k emails (unlimited subscribers).
The Verdict
Choose SendX if you're a high-volume sender who values unlimited emails and predictable billing.
Choose Brevo if you need multi-channel marketing (SMS, chat), have a large list with moderate sends, or want to start free.
Choose Sequenzy if you run a SaaS and need subscription-aware features with native Stripe integration.
For more options, see our SendX alternatives and Brevo alternatives. Use our email calculator to estimate your specific costs.
Pricing Models That Change the Math
Brevo's unlimited contacts with per-email pricing fundamentally changes the economics compared to SendX's per-subscriber model. Businesses with large contact databases that segment carefully and send targeted campaigns save significantly with Brevo.
SendX includes unlimited email sends which benefits high-frequency senders. If you email your entire list daily, SendX's unlimited sends at a fixed price is predictable. Brevo's per-email charges would accumulate with such volume.
Model your actual sending patterns against both pricing structures before deciding. High frequency plus moderate list size favors SendX. Large list with moderate frequency favors Brevo dramatically.
Transactional Email as a Differentiator
Brevo includes transactional email on every plan, even free. Password resets, order confirmations, and account notifications are handled within the same platform as marketing campaigns. SendX has no transactional email capability.
For businesses that need both marketing and transactional email, Brevo eliminates the need for a separate sending service. This saves both cost and complexity. Sequenzy takes a similar approach with transactional email built into every plan.
CRM and Multi-Channel Coverage
Brevo includes CRM, live chat, WhatsApp campaigns, and SMS alongside email. SendX focuses on email marketing with forms and landing pages. The gap in multi-channel capability is significant for businesses wanting consolidated marketing tools.