Intelligent account rotation across your sender pool
Never hit daily Google send limits again. Mailofly dynamically rotates outbound traffic across all your active sender identities, automatically bypassing accounts near their daily quota.
Volume load balancing
Daily quota protection
Seamless identity failover
Engineered for developer velocity
Daily quota governors
Tracks daily used vs remaining allocations in real time and smoothly switches to fresh senders before caps are reached.
Warm identity distribution
Rotates cold and warm outbound sends evenly across accounts so every mailbox builds and preserves prime reputation.
Custom priority weights
Designate preferred sender identities or set round-robin rotations per campaign or API key.
How it works
Connect multiple identities
Add 2, 5, or 20+ Google Workspace or SMTP identities under your organization.
Enable automatic rotation
Set account rotation mode in your campaign settings or default organization policy.
Scale volume effortlessly
Send thousands of personalized emails without single-account throttling or manual switching.
Explore related features
SDKs for every language
First-class, strictly typed client libraries engineered for developer happiness. Send transactional messages, query logs, and manage contacts with idiomatic syntax.
Mailofly AI & Native MCP
Integrate Mailofly directly with your AI development workflows. Run our native Model Context Protocol (MCP) server or chat with Mailofly AI for real-time domain audits and template optimization.
Smart dynamic routing
Intelligently routes traffic to the fastest regional servers and fallback SMTP providers based on ISP latency and deliverability health.
Ready to build with Smart sender account rotation?
Join thousands of engineering teams delivering transactional and lifecycle email with blazing speed and zero downtime.