Back to catalog
Sendportal
MITSendportal is a self-hosted email marketing platform that connects to Amazon SES and Postmark to replace Mailchimp without per-subscriber pricing.
Open-source alternative to — compare it against:
Overview
Sendportal decouples email campaign management from delivery infrastructure by running on a Laravel and Redis queue stack that dispatches directly through external email service providers. It provides multi-tenant workspaces, subscriber segmentation, and click tracking while letting teams bring their own sending credentials from Amazon SES, Postmark, Mailgun, or SendGrid. By offloading bulk transmission to dedicated email APIs, the application eliminates contact-tier pricing without forcing teams to run raw SMTP servers.
Why Sendportal instead of Mailchimp
Mailchimp bundles contact storage, visual template editors, automated marketing funnels, and shared IP reputation into a subscription model that grows exponentially with list size. For teams that only send scheduled newsletters, paying escalating monthly fees simply to store inactive contacts creates an artificial operational ceiling. Sendportal changes the performance equation by separating campaign orchestration from email transport.
Instead of sending messages through a proprietary shared cloud, Sendportal uses Redis queues and background worker processes to stream messages into high-throughput delivery APIs like Amazon SES. Small teams and operations leads gain granular control over worker concurrency, batch dispatch rates, and server resources. That dispatch speed comes with a trade-off: Sendportal provides no built-in deliverability safety net, so your team must manage SPF, DKIM, and IP reputation directly. It also lacks Mailchimp's visual customer journey builder and hosted landing pages, focusing strictly on newsletter delivery.
What it does well
- Multi-tenant workspaces with isolated sending domains, allowing agencies to manage distinct client lists and API keys under one installation.
- Native integration with major transactional providers including Amazon SES, SendGrid, Postmark, Mailgun, and Mailjet for flexible routing.
- Redis-backed queue workers that handle high-volume batch dispatches without degrading web dashboard responsiveness.
- Dual deployment options, running either as a standalone application or as an embedded package inside existing Laravel projects.
- Real-time webhook ingestion that logs email opens, link clicks, bounces, and unsubscribe events to the local database.
- Tag-based segmentation and CSV subscriber import tools that process list updates without per-subscriber cost penalties.
