Lettr vs SocketLabs

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

SocketLabs

See full pricing history

USD · US · source: www.socketlabs.com

Plan	Pricing	Charged by	Offer type
Core	USD 39.95 monthly $0 first month, then $39.95/month	Flat	Standalone · Fixed
Pro 100k	USD 89.95 monthly $89.95 monthly	Flat	Standalone · Fixed
Enterprise	Contact sales Contact Us	Flat	Standalone · Contact sales

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

SocketLabs

Core

Highlights Monthly emails: 40,000

Included
Highlights Insight history: 10 days

Included
Highlights Performance history: 90 days

Included

Pro 100k

Highlights Monthly emails: 100,000

Included
Highlights Dedicated IP address: Included
Highlights Insight history: 30 days

Included

Enterprise

Highlights Monthly emails: 1M+

Included
Highlights Custom packages: Included
Highlights Dedicated customer support: 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

SocketLabs

August 27, 2026 Source
- Core: USD 39.95 monthly
- Pro 100k: USD 89.95 monthly
- Enterprise: Contact sales