Plans & Billing

Overview

SentinMail uses a tiered subscription model. Each plan determines your resource limits (subscribers, templates, emails per month) and which features you can access.

View Your Current Plan

Go to Settings → Subscription to see:

Your current plan name and status
Usage bars for each resource limit:
- Team members
- Email templates
- Subscribers
- Subscriber lists
- SMTP configurations
- Emails sent this month
Your billing cycle — start date, renewal date, and status

Available Plans

On the Subscription page, scroll down to see all available plans with a Monthly/Annual toggle. Annual plans typically offer a discount.

Each plan card shows:

Price
Resource limits
Included features
An Upgrade button

Tip

Compare plans side-by-side to find the right fit. Feature differences are highlighted — look for items like saved blocks, media uploads, advanced segmentation, automation workflows, webhooks, and API access.

Upgrade Your Plan

Choose a plan

On the Subscription page, click Upgrade on your desired plan.

Choose billing cycle

Toggle between Monthly and Annual billing.

Apply a coupon (optional)

If you have a coupon code, enter it and click Validate. The discount will be shown before you pay.

Select payment method

Choose how you'd like to pay:

Method	Provider
Credit/Debit Card	Stripe
Cryptocurrency	NOWPayments
Card / M-Pesa	Pesapal

Complete payment

Click Proceed to Payment and follow the payment flow. Once confirmed, your plan upgrades immediately.

Manage Billing

If you pay via Stripe, you can access the Stripe billing portal to:

View and download invoices
Update your payment method
View payment history

Click Manage Billing on the Subscription page.

Billing History

A table at the bottom of the Subscription page shows all billing events — successful payments, failed payments, and coupon redemptions.

Cancel Your Subscription

Go to Subscription

Navigate to Settings → Subscription.

Click Cancel Subscription

Confirm the cancellation in the dialog. Your plan continues until the end of the current billing period, then downgrades to the Free plan.

Warning

Only the company Owner can cancel a subscription. When cancelled, you keep access to paid features until the end of the billing period. After that, features beyond the Free plan limits become unavailable.

What Happens at Your Limits?

When you reach a resource limit, SentinMail prevents you from creating more of that resource:

Resource	What Happens
Subscribers	New subscriber creation is blocked. The public subscribe page returns an error.
Templates	New template creation is blocked.
Emails/month	Send requests are blocked until the quota resets.
Team members	New invitations are blocked.
SMTP configs	New config creation is blocked.
Lists	New list creation is blocked.

You'll see a clear message explaining the limit and a prompt to upgrade.

Info

Usage bars on the Subscription page show how close you are to each limit. Keep an eye on these to avoid surprises.

Coupons

If you have a coupon code:

Go to Settings → Subscription
Click Upgrade on any plan
Enter the code in the Coupon field
Click Validate — if valid, the discounted price is shown
Proceed with payment at the reduced price

Coupons have expiry dates and may be limited to specific plans or first-time upgrades.

Documentation