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Average Ratings 0 Ratings

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features
design
support

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Description

Outlook and Microsoft 365 privacy-focused mail merge add-in You can send confidential internal newsletters or marketing campaigns using the same tool. Your data is never uploaded to other servers, unlike other tools. It remains with you at all times. You get great response rates from people because the emails are sent from your email address. Outlook can be used to create your template email. You can add personalization tokens from a table or your address book. Attach any number of images and SecureMailMerge will generate your emails right in front your eyes. Outlook 365 works on Windows, Mac, and Browser versions. A Microsoft 365 Business subscription is required. Supports Shared Mailboxes.

Description

SubsiMail is a platform for self-hosted cold email sequencing, allowing users to manage prospect lists, templates, connected inboxes, and all campaign-related data directly within their own database rather than relying on a third-party SaaS solution. Designed as an alternative to platforms like Instantly, Smartlead, lemlist, and Apollo, it offers flat pricing based on connected inboxes instead of per-seat charges, ensuring complete ownership and export of data without any content review processes or external access to contacts and campaigns. The application operates seamlessly as a single Docker container on any $5 VPS, enabling users to connect to Gmail, Outlook, or any SMTP/IMAP inbox, create multi-step email sequences that incorporate merge fields and reply detection, manage user roles (admin, manager, view-only) while maintaining a comprehensive audit trail, and utilize integration through a REST API secured by personal API keys. Furthermore, the initial connected mailbox comes with a perpetually free option, making it an attractive choice for individuals and businesses alike. This unique setup empowers users with greater control over their email marketing campaigns while simplifying the management process.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

Screenshots View All

No images available

Integrations

Microsoft Outlook Yes 
Gmail No 
Microsoft 365 Yes 

Integrations

Microsoft Outlook Yes 
Gmail Yes 
Microsoft 365 No 

Pricing Details

$10/month/user
Enterprise licensing via the Microsoft AppSource store is available.
Free Trial Yes 
Free Version Yes 

Pricing Details

Free (paid plans from $49/mo)
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Deployment

Web-Based No 
On-Premises Yes 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux Yes 
Chromebook No 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Sol Inventum OÜ

Founded

2017

Country

Estonia

Website

www.securemailmerge.com

Vendor Details

Company Name

SubsiMail

Founded

2026

Country

India

Website

subsimail.com

Product Features

Email Marketing

A/B Testing No 
Artificial Intelligence No 
Auto-Responders No 
CAN SPAM Compliance No 
Customer Surveys No 
Drip Campaigns No 
Dynamic Content No 
Event Triggered Email No 
Image Library No 
Landing Pages/Web Forms No 
Mailing List Management No 
Mobile Optimized Emails No 
Reporting/Analytics No 
Subscriber Management No 
Template Management No 
WYSIWYG Email Editor No 

Product Features

Email Marketing

A/B Testing No 
Artificial Intelligence No 
Auto-Responders No 
CAN SPAM Compliance No 
Customer Surveys No 
Drip Campaigns No 
Dynamic Content No 
Event Triggered Email No 
Image Library No 
Landing Pages/Web Forms No 
Mailing List Management No 
Mobile Optimized Emails No 
Reporting/Analytics No 
Subscriber Management No 
Template Management No 
WYSIWYG Email Editor No 

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