Email Sending API
by Reply.io

Integrate email campaigns into your app and stop losing customers to competitors with just a few lines of code

Top reasons

to add email sequences to your product

Streamline user experience

Enable users connect personal or business email accounts to send sequences, track replies, and monitor performance directly within your platform.

Outshine the competition

Stand out with built-in email sequences — offering users an all-in-one solution they’ll love.

Boost retention

Keep users happy by managing email sequences directly within your product – no more jumping between apps and paying for multiple tools.

Drive quick ROI

Attract new users and increase revenue quickly by adding best-in-class email sequencing functionality to your product.

Explore our API documentation

Get all the technical details you need in our easy-to-follow documentation. See how simple integration can be and why others trust our email sending API.

View API documentation

Unlock the full power of email outreach with Reply API

Create and manage users

Set up new users and control their access to campaigns and contacts. Manage permissions to keep your team organized and productive.

Manage campaigns

Create email campaigns, check their details, and organize schedules. Everything you need in one place.

Handle contacts

Add new contacts, update their information, or remove them. Track activity and campaign progress.

Use templates

Choose from pre-designed email mplates to simplify your outreach. Pick the one that fits your needs and send it right away.

Check performance

Access campaign and contact statistics to see opens, clicks, and replies. Use this data to improve results.

Blacklist emails

Block specific emails or domains to maintain a focused and reliable campaign list. Add or remove entries anytime.

Email account integration

Add, update, or delete email accounts directly, keeping your workflow seamless and efficient.

Talk to us

Why choose Reply email campaign API?

Proven & Trusted

Reply email sequences have been trusted by businesses for years. Regular updates keep the system fresh, reliable, and optimized for performance.

Your brand, your control

Enjoy full control of the user experience by building your own sequencing front end on top of Reply.io’s email sequencing engine.

Google OAuth verified

With Google OAuth verification, our API ensures smooth integration with Google’s security protocols. We also offer full support if you need help with Google security verification.

Easily scale your business

As your business grows, Reply grows with you. No extra effort required—our API adapts to your needs as you scale.

Top-notch security

Your data is protected by Privacy Shield, GDPR, and SOC 2 certifications, ensuring the highest security standards for your business.

Handle everything programmatically

From creating seats to adding mailboxes and managing all aspects of email sequences – all via API endpoints. No manual actions in UI needed.

Learn how 3,000+ companies grow with Reply

Top-rated on G2

1,270+ G2 testimonials with 4.6/5 average rating

Trustworthy and reliable

Reply is designed to be your trusted partner in sales outreach

Trusted by 3,000+ businesses

Adobe

Strava

OneTrust

YouScan

Gorgias

OpenWeb

boost your sales with reply

Frequently Asked Questions

What is the Reply.io email sending API?

Reply.io’s Email Sending API allows you to integrate email campaign functionality directly into your product. With just a few lines of code, you can enable users to send email sequences, track replies, and monitor campaign performance without leaving your platform.

How can integrating email sequences help my business?

Integrating email sequences helps improve user retention by offering a seamless experience without the need for external platforms. It also boosts user engagement and can drive a quick ROI by enhancing the value your product provides.

What features are available with the Reply.io Email API?

Manage Campaigns: Create, schedule, and organize email campaigns.
Handle Contacts: Add, update, or remove contacts and track campaign progress.
Use Templates: Simplify outreach with pre-designed email templates.
Check Performance: Access detailed campaign statistics to track opens, clicks, and replies.
Blacklist Management: Block unwanted emails or domains.
Email Account Integration: Add or manage user email accounts directly.
User Management: Set up and manage user permissions for your team.

How secure is the Reply.io Email API?

Reply.io ensures top-notch security with GDPR, Privacy Shield, and SOC 2 certifications. We adhere to the highest security standards to protect your data and provide peace of mind.

Can the Reply.io email API scale with my business?

Yes! The Reply.io Email API is built to scale effortlessly with your business. As your needs grow, the API adapts to meet them without requiring extra effort.

How do I get support if I need help?

Our dedicated support team is available to assist you at every step of the way. Whether you need help with integration or ongoing usage, we’ve got you covered.

Email Sending API by Reply.io