Enterprise Email Relays

High-Speed Email Delivery
Built for Scalable Infrastructure

Send transactional emails and high-volume marketing campaigns with low latency, dedicated IPs, and automated SPF, DKIM, & DMARC alignment.

99.98%

Inbox Placement Rate

< 150ms

Average API Latency

Automated

IP Warm-up Engine

24 / 7

Deliverability Monitoring

Powerful Infrastructure Features

Built specifically for developers, system administrators, and email marketers.

🛡️

Automated Authentication

One-click validation of SPF, DKIM keys, and DMARC alignment to satisfy Gmail and Yahoo security requirements.

🔥

Smart IP Warm-up

Gradually scale sending limits on new dedicated IP addresses to establish high domain reputation effortlessly.

📈

Real-time Webhook Events

Receive immediate HTTP POST payloads for bounces, spam complaints, opens, link clicks, and drops.

Transparent Pricing for Any Scale

Choose a plan that fits your sending volume. Upgrade or downgrade anytime.

Starter

Perfect for small startups

₹999 /mo

50,000 Emails / mo
Shared Dedicated Pools
Standard REST API & SMTP
7-Day Log Retention

Pro Relay

For growing businesses

₹3,499 /mo

250,000 Emails / mo
1 Dedicated IP Included
Automated IP Warm-up
30-Day Log Retention

Enterprise

High-volume infrastructure

Custom

1 Million+ Emails / mo
Custom Dedicated IP Pools
Sub-account Management
Dedicated Account Manager

Developer API Documentation

Integrate CloudSend.in using standard SMTP or our RESTful API in minutes.

1. Send Email via REST API (cURL)

curl -X POST https://api.cloudsend.in/v1/send \
  -H "Authorization: Bearer CS_LIVE_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "notifications@cloudsend.in",
    "to": ["user@example.com"],
    "subject": "Account Verification",
    "html": "<p>Your verification code is <strong>884920</strong></p>"
  }'

2. Standard SMTP Configuration Settings

Host: smtp.cloudsend.in

Port: 587 (TLS) or 465 (SSL)

Authentication: Plain / Login Password

Privacy Policy

Last Updated: September 2026

1. Information We Collect

At CloudSend.in, we collect minimal data necessary to deliver your transactional and marketing emails efficiently. This includes account profile information, sending logs, bounce records, and API usage statistics.

2. Data Processing & Email Content

We process the body and recipient addresses of emails sent through our relays strictly for message delivery, queue handling, and spam suppression. We never sell, rent, or share your email lists or email body contents with third parties.

3. Data Security & Retention

All communication between your applications and CloudSend.in servers is encrypted using TLS 1.3 protocol. Raw email message logs are automatically scrubbed and deleted after 30 days unless configured otherwise in your plan settings.

4. Contact Us

For any privacy concerns or compliance queries regarding GDPR/Indian IT Acts, reach out to privacy@cloudsend.in.

Terms of Service