Email Infrastructure Built for Agencies

Send transactional email, verify customer addresses and manage email infrastructure across websites, SaaS applications and client projects from one platform.

Built Around the Way Agencies Work

Agencies often manage email infrastructure across multiple websites, applications and clients. Sendzovo brings those workflows together.

Multiple Client Projects

Manage email delivery for different applications and client projects without building separate email infrastructure from scratch.

Unreliable Email Lists

Verify addresses before campaigns or application workflows reach your sending infrastructure.

Complex Email Setup

Use REST APIs or SMTP to integrate email into websites, SaaS applications and custom client platforms.

Delivery Visibility

Use delivery events, webhooks and suppression controls to build more reliable email workflows.

Client Handoffs & Maintenance

Keep email infrastructure organized when projects move from development to production or when ongoing maintenance is handed back to the client.

One Platform for Your Email Workflow

Sendzovo combines the essential infrastructure agencies need to send and maintain reliable email.

Transactional Email API

Integrate email directly into client applications using a simple REST API.

POST https://api.sendzovo.com/v1/emails

SMTP Delivery

Connect existing applications, CMS platforms and frameworks using standard SMTP.

Host: smtp.sendzovo.com
Port: 587
TLS: Required

Email Verification

Check email addresses before sending to reduce invalid, disposable and risky addresses.

Syntax ✓ MX ✓ Disposable ✓ SMTP ✓

Webhooks & Events

Receive delivery and email activity events in your own applications and client systems.

delivered → opened → bounced → complained

Manage Email Across Client Projects

Agencies often build and maintain multiple websites and applications at the same time. Keep each project's email infrastructure organized while using the same email platform.

Separate Client Projects

Keep email integrations associated with the applications and projects your agency manages instead of building a completely separate delivery setup for every project.

Project-Specific Domains

Authenticate the sending domains used by individual client applications and keep production email connected to the appropriate client brand.

Consistent Integration

Use the same API and SMTP approach across different client projects so your development team does not need to learn a completely different email system for every application.

Centralized Email Infrastructure

Give your team a consistent email infrastructure layer across the websites, SaaS applications and platforms you build and maintain.

Manage Email Across Multiple Client Projects

Keep client email integrations organized while giving each project the infrastructure it needs for transactional communication and email verification.

Separate Client Projects

Keep email configuration organized across the different websites, applications and platforms your agency manages.

Client-Specific Sending

Connect each application to the appropriate sending domain and email configuration for that client.

Repeatable Setup

Use a consistent email integration process across new client projects instead of designing a new delivery workflow for every application.

Easier Maintenance

Centralize the email infrastructure your agency relies on while your development team focuses on application development and client work.

Common Agency Use Cases

Use Sendzovo across the different types of projects your agency delivers.

Web Development

Add reliable email delivery to websites, portals and custom web applications.

  • Account verification
  • Password resets
  • Contact notifications
  • Form submissions

SaaS Applications

Power application-generated email without maintaining your own SMTP infrastructure.

  • Welcome emails
  • Invoices and receipts
  • Notifications
  • System alerts

Marketing & Lead Lists

Validate email addresses before they enter downstream marketing or communication workflows.

  • Email syntax validation
  • Domain checks
  • Disposable address detection
  • Risk identification

Client Platforms

Integrate Sendzovo into the systems you build and give clients dependable email infrastructure from day one.

  • Custom dashboards
  • CRM applications
  • E-commerce systems
  • Internal business software

Email List Verification

Verify customer and lead addresses before they enter downstream email workflows or are used by client applications.

  • Email syntax validation
  • Domain and MX checks
  • Disposable address detection
  • Risk identification

Build and Launch Client Email Faster

Standardize how your team integrates email across new projects so developers can spend more time building the application and less time maintaining email infrastructure.

Start With a Familiar API

Integrate transactional email through a REST API and connect sending directly to application events and workflows.

Use SMTP When Appropriate

Connect existing applications, CMS platforms and frameworks through standard SMTP without rebuilding the email integration.

Reuse Your Development Approach

Apply a consistent email integration pattern across different client projects and technology stacks.

Move From Development to Production

Configure domain authentication and production email infrastructure as the client application moves toward launch.

Why Agencies Choose Sendzovo

Faster Integrations

Give developers straightforward API and SMTP options instead of building custom email infrastructure for every project.

Better Email Quality

Verify addresses before sending and reduce unnecessary delivery attempts to invalid or disposable addresses.

Developer Friendly

Use familiar HTTP APIs, SMTP and webhooks with documentation designed for developers.

Less Infrastructure to Maintain

Let Sendzovo handle core email infrastructure while your team focuses on building client applications.

Repeatable Across Projects

Use a consistent email integration approach across websites, SaaS applications and custom client projects instead of creating a different email workflow for every application.

Make Client Handoffs Easier

Build email infrastructure that can continue supporting the client after development is complete, whether your agency remains involved or hands ongoing management back to the client.

Document the Integration

Keep API, SMTP and webhook configuration documented so future developers can understand how email is connected to the application.

Use the Client's Sending Domain

Keep production email associated with the client's own domain and brand rather than relying on an agency-owned sending identity.

Maintain a Consistent Setup

Use a repeatable email integration approach across client projects to simplify future maintenance and development.

Support Ongoing Maintenance

Keep email infrastructure connected to the application so your team can continue managing delivery workflows when ongoing support is part of the engagement.

From Client Project to Production Email

Use a repeatable workflow to integrate email into new client applications and move from development to production.

1. Start the Client Project

Identify the application's transactional email requirements and choose the appropriate Sendzovo integration.

2. Configure the Integration

Connect the application through the Sendzovo Email API or configure its existing SMTP integration.

3. Authenticate the Domain

Configure the required DNS records and authenticate the client's sending domain before production traffic.

4. Configure Templates & Events

Connect transactional templates, application events and supported webhooks to the client's workflows.

5. Launch Production Email

Move the application to production with its email infrastructure configured and ready for real traffic.

6. Maintain & Monitor

Use supported events, webhooks and suppression controls as part of ongoing email maintenance.

Integrate With the Technologies Your Agency Uses

Connect Sendzovo to the frameworks, applications and technology stacks your development team already uses.

REST API

Build direct integrations from custom applications and backend services using the Sendzovo Email API.

Explore Email API

SMTP

Connect applications and platforms that already support standard SMTP delivery.

Explore SMTP

Email Templates

Build reusable transactional email content for different client application workflows.

Explore Templates

Email Verification

Verify addresses before they enter client application or communication workflows.

Explore Verification

Agency Email FAQs

Can agencies use Sendzovo for multiple client projects?

Yes. Sendzovo can be integrated into websites, SaaS applications and other client projects that need transactional email, SMTP delivery or email verification.

Can I use Sendzovo with existing SMTP applications?

Yes. Applications and frameworks that support standard SMTP can connect to Sendzovo using its SMTP service.

Can agencies use their clients' sending domains?

Yes. Client production email should use the appropriate authenticated sending domain associated with the client's application or brand.

Can agencies integrate Sendzovo into custom applications?

Yes. Custom applications can integrate with Sendzovo through the Email API, while applications that support SMTP can use the SMTP service.

Can agencies verify email addresses before sending?

Yes. Sendzovo email verification can be used to evaluate addresses before they enter an application's broader email workflow.

Can agencies receive email events in client applications?

Yes. Supported email events can be delivered to client applications through Sendzovo webhooks.

Can Sendzovo be used for transactional email?

Yes. Agencies can integrate Sendzovo into client applications for password resets, account notifications, receipts, verification emails and other application-driven messages.

Does Sendzovo replace the need to build SMTP infrastructure?

Sendzovo provides the email infrastructure needed for supported API and SMTP integrations, allowing development teams to avoid building a complete email delivery system themselves.

Build Better Email Infrastructure for Your Clients

Start integrating transactional email and verification into your next client project with Sendzovo.