Email Infrastructure That Grows With Your Startup

Launch faster with simple transactional email, SMTP delivery and email verification built for growing products.

Why Startups Choose Sendzovo

Keep your email infrastructure simple while your product, team and customer base grow.

Ship Faster

Add transactional email through an API or SMTP instead of building your own email delivery infrastructure.

Reduce Infrastructure Work

Spend engineering time on your product instead of maintaining the systems required to operate email delivery.

Keep Your Integration Flexible

Start with the integration approach that fits your application and evolve your email workflows as your product changes.

Build for the Next Stage

Establish email workflows early that can continue supporting your product as usage and requirements grow.

Focus on Building Your Product

Your engineering team should spend its time building product features, not maintaining email infrastructure.

Move Quickly

Add transactional email to your application without building and maintaining your own delivery system.

Keep Your Stack Simple

Use a straightforward API or standard SMTP instead of introducing unnecessary infrastructure into your application.

Protect Your Sending Reputation

Verify addresses and handle delivery events so your application can make better decisions about email.

Scale as You Grow

Start with the infrastructure you need today and expand your email workflows as your product and customer base grow.

Everything You Need to Ship Email

Sendzovo gives startup teams the core email tools they need without unnecessary complexity.

Transactional Email API

Send application emails directly through a clean REST API designed for developers.

POST https://api.sendzovo.com/v1/emails
Explore Email API →

SMTP

Connect your existing framework, CMS or application using standard SMTP settings.

Host: smtp.sendzovo.com
Port: 587
TLS: Required
Explore SMTP →

Email Verification

Validate user and customer email addresses before sending important messages.

Syntax ✓ MX ✓ Disposable ✓ SMTP ✓
Explore Email Verification →

Webhooks

Send email events back to your application and build automated workflows around delivery activity.

delivered → bounced → complained
Explore Webhooks →

Built for Your Product's Critical Emails

Keep customers informed throughout their experience with your product.

Authentication

Deliver the messages users need to securely access their accounts.

  • Email verification
  • Password resets
  • Login notifications
  • Security alerts

User Notifications

Keep users informed about important activity inside your application.

  • Account notifications
  • Workflow updates
  • System notifications
  • Product activity

Payments & Billing

Deliver important financial communication as customers interact with your product.

  • Invoices
  • Receipts
  • Payment confirmations
  • Billing notifications

Product Communication

Build reliable email workflows around the events that matter to your customers.

  • Onboarding emails
  • Product notifications
  • Service alerts
  • Account updates

Designed for Startup Engineering Teams

Get your email integration running without slowing down product development.

Simple API Integration

Integrate email into your backend using standard HTTP requests and familiar authentication.

Works With Existing Applications

Use SMTP when your application or framework already supports standard mail delivery.

Test Before Production

Keep development and production workflows separate while your team builds and tests integrations.

Built for Automation

Connect webhooks and email events to your existing application workflows.

One Email Workflow for Your Growing Team

Give engineering, product and operations teams a common foundation for application-generated email.

Engineering

Integrate email through the API, SMTP and webhooks without building a delivery system from scratch.

Product

Build customer communication around important product events such as onboarding, account activity and notifications.

Operations

Use delivery events, bounce handling and suppression workflows to keep email operations organized.

Founders & Teams

Keep email infrastructure focused on supporting the product instead of becoming another system your team has to maintain.

From First Integration to Production Email

Start with the essentials and add more email infrastructure as your product requirements grow.

1. Connect Your Application

Integrate your application through the Sendzovo REST API or connect an existing SMTP-compatible application.

2. Authenticate Your Domain

Configure the DNS records required to authenticate the domain your application uses to send email.

3. Build Your Email Workflows

Add transactional emails to important product events such as account creation, payments and notifications.

4. Connect Delivery Events

Use webhooks and email events to connect delivery activity with your application's workflows.

5. Add Verification

Validate addresses where appropriate to reduce avoidable delivery attempts and improve recipient data quality.

6. Monitor and Improve

Use delivery activity, bounce handling and suppression workflows as your product and email requirements grow.

Validate Emails Before You Send

Email verification can help startups reduce avoidable bounces and improve the quality of addresses entering their systems.

Validate Signups

Check email addresses during onboarding before relying on them for account communication.

Validate User Addresses

Check addresses during signup or account workflows before relying on email as an important channel for your users.

Identify Risky Addresses

Detect disposable domains and other verification signals before sending.

Reduce Unnecessary Sends

Avoid repeatedly attempting delivery to addresses that are unlikely to receive your messages.

From MVP to a Growing Product

Your email infrastructure should not need to be rebuilt every time your startup reaches a new stage.

Build

Start with a simple API or SMTP integration while your team focuses on validating the product.

Launch

Authenticate your sending domain and establish reliable production email workflows.

Grow

Add verification, webhooks and suppression workflows as your email requirements become more sophisticated.

Scale

Continue building on the same email infrastructure as your application and customer base expand.

Email Infrastructure FAQs for Startups

Common questions about using Sendzovo as your product and email infrastructure grows.

Is Sendzovo suitable for early-stage startups?

Yes. Startups can integrate transactional email through the REST API or SMTP and expand their email workflows as their product develops.

Can startups use Sendzovo for MVPs?

Yes. Sendzovo can be integrated into an MVP to handle application-generated emails such as account verification, password resets and notifications.

Can I use SMTP instead of the API?

Yes. Applications and software that support SMTP can connect to Sendzovo using standard SMTP settings.

Can startups verify emails during signup?

Yes. Email verification can be used to check addresses before they enter important application workflows.

Can Sendzovo grow with my application?

Sendzovo is designed to support application email workflows from initial integration through more developed production requirements.

Can I receive delivery events in my application?

Yes. Webhooks can connect supported email events to your application's backend and automated workflows.

Do I need to build my own email infrastructure?

No. Sendzovo provides API and SMTP-based email infrastructure so your engineering team does not need to build a complete email delivery system from scratch.

How do I get started with Sendzovo?

Create an account, review the documentation and connect Sendzovo to your application using the integration method that fits your stack.

Build Your Startup. We'll Handle the Email Infrastructure.

Start sending reliable transactional email without adding unnecessary infrastructure to your engineering stack.