What is SubsiMail?

SubsiMail is a self-hosted platform for cold email sequencing that enables users to oversee their prospect lists, templates, connected inboxes, and all campaign-related information within their own database, eliminating the need for third-party SaaS solutions. Positioned as a viable alternative to services like Instantly, Smartlead, lemlist, and Apollo, it features straightforward pricing based on the number of connected inboxes, rather than charging per seat, thus ensuring users retain full ownership of their data and can export it freely without undergoing any content review processes or external interference with their contacts and campaigns. The application runs efficiently as a single Docker container on an affordable $5 VPS, allowing connections to Gmail, Outlook, or any SMTP/IMAP inbox, enabling the creation of multi-step email sequences that can utilize merge fields and reply detection, while also providing user role management (admin, manager, view-only) with a detailed audit trail. Additionally, integration is facilitated through a REST API that is secured by personal API keys, enhancing the security of user data. Notably, the first connected mailbox is offered with a perpetually free option, making it particularly appealing to both individuals and companies. This innovative configuration not only grants users superior control over their email marketing initiatives but also streamlines the overall management experience, ensuring a more efficient workflow. As a result, SubsiMail stands out as a powerful tool for anyone looking to optimize their email outreach efforts.

Pricing

Price Starts At:
Free (paid plans from $49/mo)
Free Version:
Free Version available.

Screenshots and Video

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Company Facts

Company Name:
SubsiMail
Date Founded:
2026
Company Location:
India
Company Website:
subsimail.com
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Product Details

Deployment
Linux
On-Prem
Training Options
Documentation Hub
Support
Web-Based Support

Product Details

Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English

SubsiMail Categories and Features

Email Marketing Software

A/B Testing
Artificial Intelligence
Auto-Responders
CAN SPAM Compliance
Customer Surveys
Drip Campaigns
Dynamic Content
Event Triggered Email
Image Library
Landing Pages/Web Forms
Mailing List Management
Mobile Optimized Emails
Reporting/Analytics
Subscriber Management
Template Management
WYSIWYG Email Editor