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 60k 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.
Use-case matchups
| Situation | Best first look | Why |
|---|---|---|
| Team wants budget email marketing with generous sending | SendX | SendX is the baseline here for teams optimizing for lower-cost sending and simple campaign execution. |
| Team wants pay-per-email style multi-channel breadth | Brevo | Brevo is broader than SendX and should be compared when SMS, transactional paths, or CRM-style tools matter. |
| SaaS or subscription team wants lifecycle and transactional email | Sequenzy | Sequenzy is stronger when Stripe events, transactional messages, and campaigns need one subscriber model. |
| Newsletter team mainly cares about monthly send allowance | SendX | SendX is worth testing when unlimited or generous sending is the main cost driver. |
| Team needs the specialist capability | Brevo | Brevo deserves the first demo when the main requirement is multi-channel email, SMS, CRM-like tools, and transactional options. |
| Team wants email workflows with less list-size pressure | Sequenzy | Sequenzy is more relevant when lifecycle journeys and transactional email matter more than newsletter blasting. |
Pricing reality
The pricing signals on this page list SendX at $59.99/month, Brevo at $25-65/month, and Sequenzy at $49/month. Those numbers are useful only after checking send limits, list size, plan gates, and required add-ons.
SendX should be evaluated on whether its budget or unlimited-send positioning holds at your actual list size and campaign frequency. Brevo's real cost depends on whether the team needs multi-channel email, SMS, CRM-like tools, and transactional options.
Review signals
For SendX, validate review themes around ease of use, deliverability, campaign editor quality, support, and pricing transparency. For Brevo, focus review research on whether users praise the reason you would choose it: multi-channel email, SMS, CRM-like tools, and transactional options.
Best Fit by Pricing Model
Best email marketing tool for unlimited-send campaigns
SendX fits teams that value unlimited sends, straightforward email marketing, and predictable campaign execution without a broader multi-channel suite. It is strongest when high send volume matters more than transactional email or WhatsApp.
Best budget platform for multi-channel and transactional email
Brevo is the better fit when the team wants campaigns, transactional email, SMS, WhatsApp, CRM basics, and per-email pricing. It works better when communication needs go beyond newsletters and promotional campaigns.
Best SaaS lifecycle platform for revenue-triggered email
Sequenzy fits SaaS teams whose emails should be driven by signups, product behavior, subscriptions, invoices, and failed payments. It is more relevant when lifecycle context matters more than either unlimited sends or broad small-business channels.
Migration checklist
| Workstream | Moving toward SendX | Moving toward Brevo | Simplifying to Sequenzy |
|---|---|---|---|
| Contacts and consent | Import lists, tags, fields, suppression status, unsubscribes, and consent source. | Map contacts, attributes, lists, SMS consent, automations, transactional sends, forms, and CRM fields. | Import subscribers, attributes, tags, suppressions, and lifecycle events. |
| Sending model | Confirm monthly send allowance, throttling, sender domains, and deliverability setup. | Confirm plan limits, sending rules, and any add-ons needed for multi-channel email, SMS, CRM-like tools, and transactional options. | Confirm email volume and transactional paths fit the Sequenzy plan. |
| Automations | Rebuild core welcome, nurture, newsletter, reactivation, and simple ecommerce flows. | Rebuild the workflows that prove Brevo's advantage. | Rebuild lifecycle campaigns and transactional messages around app, store, or Stripe events. |
| Templates and forms | Move templates, forms, landing pages, sender identities, and brand assets. | Move templates, forms, brand assets, and workflow-specific content. | Move email templates and lifecycle message content. |
| Reporting | Validate campaign reports, deliverability exports, engagement tracking, and list growth. | Validate reporting for multi-channel email, SMS, CRM-like tools, and transactional options before committing. | Validate campaign, automation, transactional, and subscription lifecycle reporting. |
Decision checklist
- Is SendX's unlimited-send model, rather than Brevo's per-email pricing, the main reason to switch?
- Does Brevo's strength in multi-channel email, SMS, CRM-like tools, and transactional options matter more than lower-cost sending?
- Which platform is easier to keep clean on suppressions and unsubscribes, given Brevo's longer deliverability record?
- At 10,000 subscribers, SendX's $59.99 drops to about $45 yearly, but Brevo's $25 Starter caps at 20,000 emails.
- Since SendX has no transactional email, do billing-triggered flows like failed payments matter more than campaign volume?
- Brevo can win on breadth, but confirm send limits and support at your real volume.
