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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.

What is MassInbox?

MassInbox provides a streamlined solution for effortlessly scaling your cold email outreach campaigns. All you need to do is outline your business and provide your landing page or sales funnel, and we take care of all the nitty-gritty details, relieving you of the burdensome tasks such as creating email lists, configuring domains, scheduling appointments, and drafting email content. You can choose from our outreach options of either 150,000 or 350,000 emails, and witness your business growth with the support of MassInbox. Additionally, you have the freedom to pause your subscription whenever necessary, giving you the flexibility to adapt your marketing approach as needed. Notable features include: 1) Simple and rapid setup process 2) An impressive inbox delivery guarantee of over 85% 3) Results presented within a mere 48-hour timeframe 4) Detailed reporting on campaign performance 5) The convenience of pausing your service at any time to suit your needs.

Media

No images available

Media

No images available

Integrations Supported

Gmail
Microsoft Outlook

Integrations Supported

turboSMTP

API Availability

API Availability

Pricing Information

Free (paid plans from $49/mo)
Free Version

Pricing Information

$3995/month

Supported Platforms

On-Prem
Linux

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

24 Hour Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Online Training

Company Facts

Organization Name

SubsiMail

Date Founded

2026

Company Location

India

Company Website

subsimail.com

Company Facts

Organization Name

MassInbox

Date Founded

2023

Company Location

United Kingdom

Company Website

massinbox.com

Categories and Features

Cold Email

Not specified

Email Marketing

Not specified

Categories and Features

Cold Email

Not specified

Email Marketing

Not specified

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