Lettr vs SMTP.com

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.

Lettr

See full pricing history

USD · US · source: lettr.com

Plan	Pricing	Charged by	Offer type
Free	Free $0 /mo	Flat	Standalone · Free
Pro	USD 15 monthly $15 /mo	Flat	Standalone · Fixed
Business	USD 110 monthly $110 /mo	Flat	Standalone · Fixed
Enterprise	Contact sales Contact sales	Flat	Standalone · Contact sales

SMTP.com

See full pricing history

USD · US · source: www.smtp.com

Plan	Pricing	Charged by	Offer type
Starter — 50,000 emails	USD 25 monthly $25/ mo	Flat · per month	Standalone · Fixed

What each plan includes

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

Lettr

Free

Highlights Monthly emails: 3,000

Included
Highlights Sending domains: 1

Included
Highlights Data retention: 7 days

Included

Pro

Highlights Monthly emails: 50,000

Included
Highlights Sending domains: 10

Included
Highlights Data retention: 30 days

Included

Business

Highlights Monthly emails: 200,000

Included
Highlights Sending domains: Unlimited

Included
Highlights Dedicated IPs: Add-on

Included

Enterprise

Highlights Monthly emails: Unlimited

Included
Highlights SSO/SAML: Included
Highlights SLA guarantee: Included

SMTP.com

Starter — 50,000 emails

Highlights Email volume: 50,000 emails

Included
Highlights Email Relay API: Included
Highlights Transactional email: Included
Highlights SMTP for developers: Included
Highlights SMTP for marketers: Included
Highlights Managed delivery: Included

How their prices changed

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

Lettr

August 27, 2026 Source
- Free: Free
- Pro: USD 15 monthly
- Business: USD 110 monthly
- Enterprise: Contact sales

SMTP.com

August 27, 2026 Source
- Starter — 50,000 emails: USD 25 monthly