Build Your Audience

Overview

Before you can send emails, you need an audience. SentinMail organizes subscribers into lists — groups of contacts you can target with campaigns. A subscriber can belong to multiple lists.

Create a Subscriber List

Go to Lists

Navigate to Audience → Lists in the sidebar.

Create a new list

Click Create List and enter:

Name — e.g., "Weekly Newsletter", "Product Updates", "Beta Testers"
Description — optional, helps your team understand the list's purpose
Color — pick a color to visually distinguish this list

Start adding subscribers

Once created, you can add subscribers to this list individually or in bulk.

Add Subscribers

Add One at a Time

Go to Audience → Subscribers and click Create Subscriber:

Email (required)
First name and Last name (optional)
Lists — select which lists to add them to
Extra fields — custom key-value data (e.g., company: "Acme", plan: "Pro") that you can use as template variables

Bulk Import

For adding many subscribers at once, go to Audience → Subscribers and click Bulk Import. You have three options:

After importing, you'll see a result summary showing how many were created and any errors (e.g., invalid emails, duplicates).

Bulk Actions

Select multiple subscribers using the checkboxes to:

Update Lists — add or remove them from lists
Delete — permanently remove selected subscribers

Every company gets a free hosted subscribe page where anyone can sign up:

Code

txt

1https://sentinmail.app/subscribe/YOUR_COMPANY_ID

Find your subscribe page URL

Your company ID is in the URL when you're on the dashboard. The subscribe page is automatically available — no setup needed.

Share the link

Add the URL to your website, social media bios, email signatures, or landing pages.

Watch subscribers arrive

When visitors sign up, they appear in your Subscribers list automatically.

The subscribe page collects:

Email (required)
First name and Last name (optional)

Info

If a previously unsubscribed visitor signs up again through the subscribe page, their suppression is automatically removed and they start receiving emails again.

Segments (Paid Plans)

Segments are dynamic subscriber groups based on rules. Unlike static lists, segments automatically include subscribers who match the criteria.

Go to Audience → Segments to create rules like:

Subscribers who opened an email in the last 30 days
Subscribers with a specific custom field value
Subscribers added after a certain date

Segments update automatically — as subscriber data changes, they move in and out of segments.

Suppressions (Paid Plans)

The suppression list contains email addresses that will never receive emails from your company. Addresses are added here when:

A subscriber clicks the unsubscribe link in an email
You manually suppress an address
A hard bounce is recorded

Go to Audience → Suppressions to view and manage suppressed addresses. You can also manually add addresses (e.g., from an external opt-out list).

Warning

Removing a suppression re-enables sending to that address. Only do this if the person has explicitly consented to receive emails again.

Documentation