Core Feature

Round-Robin Sender Pool

Distribute your bulk email volume across multiple SMTP servers and APIs seamlessly. Bypass sending limits, protect your IP reputation, and guarantee higher inbox placement.

Try It Free View Pricing

                        > INITIATING ROUND-ROBIN PROTOCOL...

                        > Target Volume: 15,000 Emails

                        [Node 1: AWS SES] Limit: 5k -> Routing... 250 OK

                        [Node 2: SendGrid API] Limit: 5k -> Routing... 250 OK

                        [Node 3: Private SMTP] Limit: 5k -> Routing... 250 OK

                        // RESULT: 15,000 Sent. Zero IPs flagged as spam.

Why You Need Multi-Node Routing

Sending massive volume from a single IP address or SMTP server is the fastest way to get your domain blacklisted. Mailina's Round-Robin Sender Pool solves this by acting as an intelligent load balancer for your outbound emails.

Bypass Strict Sending Limits

Many ESPs (Email Service Providers) impose daily sending limits (e.g., 500 emails/day on free or warmup tiers). Connect 10 different SMTPs into Mailina, and our Round-Robin engine will rotate through them, allowing you to send 5,000 emails a day without triggering a single limit.

Protect Sender Reputation

By spreading your campaign load across multiple IP addresses and domains, you drastically reduce the risk of spam filters flagging your activity as a massive blast. Keep your primary domain safe while scaling your cold outreach.

Cost Optimization

Why pay for expensive enterprise tiers? Combine the free or cheap tiers of multiple services (like Mailgun, SendGrid, Amazon SES, and Postmark) into one unified sending pool. Mailina intelligently utilizes the capacity of each.

Automatic Fallback

If one of your SMTP servers goes down, experiences a timeout, or rejects a connection, Mailina's engine automatically catches the error and routes the email through the next available node in your pool. Zero downtime.

Mix and Match SMTPs & APIs

Mailina doesn't force you into a single ecosystem. We support standard SMTP credentials alongside native API integrations for modern sending platforms.

Amazon SES API & SMTP
Mailgun & SendGrid
Google Workspace & Microsoft 365
Any custom cPanel / Private SMTP

Node Configuration Example

                    "Nodes": [

                      { "type": "api", "provider": "aws_ses", "weight": 50 },

                      { "type": "smtp", "host": "smtp.mailgun.org", "weight": 30 },

                      { "type": "smtp", "host": "mail.private-domain.com", "weight": 20 }

                    ]

                    // Mailina routes 50% traffic to AWS, 30% to Mailgun, and 20% to private SMTP.