SendMails vs Substack

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

SendMails

See full pricing history

USD · US · source: sendmails.io

Plan	Pricing	Charged by	Offer type
Basic	USD 50 monthly $50/month	Flat · per month	Standalone · Fixed
Pro Highlighted	USD 80 monthly $80/month	Flat · per month	Standalone · Fixed
Unlimited	USD 100 monthly $100/month	Flat · per month	Standalone · Fixed

Substack

See full pricing history

USD · US · source: substack.com

Plan	Pricing	Charged by	Offer type
Free publication	Free Free to publish without paid subscriptions	Flat · per month	Standalone · Free
Paid publication	Substack retains 10% of paid subscription revenue, plus card fees Substack retains 10% of paid subscription revenue, plus card fees	Usage · percentage of subscription revenue	Standalone · Usage based

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

SendMails

Basic

Plan card 50,000 subscribers: Included
Plan card Unlimited email campaigns: Included
Plan card Unlimited workflow automations: Included
Plan card Unlimited lead-capture popups: Included

Pro

Plan card 250,000 subscribers: Included
Plan card Unlimited segmentation: Included
Plan card Email validation integration: Included
Plan card API integrations: Included

Unlimited

Plan card Unlimited subscribers: Included
Plan card Unlimited email campaigns: Included
Plan card Unlimited workflow automations: Included
Plan card Outgoing webhooks: Included

Substack

Free publication

Plan card Newsletter publishing: Included
Plan card Subscriber management: Included
Plan card Hosted publication website: Included

Paid publication

Plan card Writer revenue share: 90% before card fees

Included
Plan card Paid subscriptions: Included
Plan card Audience analytics: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

SendMails

August 27, 2026 Source
- Basic: USD 50 monthly
- Pro: USD 80 monthly
- Unlimited: USD 100 monthly

Substack

August 27, 2026 Source
- Free publication: Free
- Paid publication: Substack retains 10% of paid subscription revenue, plus card fees