Postmark vs SendLayer

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.

Postmark

See full pricing history

USD · US · source: postmarkapp.com

Plan	Pricing	Charged by	Offer type
Free — Developer tier	Free $0.00 /mo	Flat · per month	Standalone · Free
Basic — Basic	USD 15 monthly $15.00 /mo	Flat · per month	Standalone · Fixed
Pro — Pro Highlighted	USD 16.5 monthly $16.50 /mo	Flat · per month	Standalone · Fixed
Platform — Platform	USD 18 monthly $18.00 /mo	Flat · per month	Standalone · Fixed

SendLayer

See full pricing history

USD · US · source: sendlayer.com

Plan	Pricing	Charged by	Offer type
Starter	USD 5 / month with annual commitment $5 / mo billed annually	Flat	Standalone · Fixed
Business	USD 15 / month with annual commitment $15 / mo billed annually	Flat	Standalone · Fixed
Growth	USD 25 / month with annual commitment $25 / mo billed annually	Flat	Standalone · Fixed
Scale	Contact sales Request Quote	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.

Postmark

Free — Developer tier

Highlights Emails per month: 100 emails/month

Included
Highlights Daily email limit: Unlimited

Included
Highlights Inbound Email - Transactional Message Streams: Up to 30 streams

Included
Highlights Servers: Up to 10 servers

Included
Highlights Custom sending domains: Up to 10 domains

Included
Highlights Email template editor & import tool: Included

Included
Highlights Full message retention: 45 Days

Included
Highlights Users: Up to 6 users

Included

Basic — Basic

Highlights Emails per month: Starting at 10,000 emails/month

Included
Highlights Extra emails: $1.80 / 1,000

Included
Highlights Daily email limit: Unlimited

Included
Highlights Inbound Email - Transactional Message Streams: Up to 15 streams

Included
Highlights Servers: Up to 5 servers

Included
Highlights Custom sending domains: Up to 5 domains

Included
Highlights Email template editor & import tool: Included

Included
Highlights Full message retention: 45 Days

Included
Highlights Users: Up to 4 users

Included

Pro — Pro

Highlights Emails per month: Starting at 10,000 emails/month

Included
Highlights Extra emails: $1.30 / 1,000

Included
Highlights Daily email limit: Unlimited

Included
Highlights Inbound Email - Transactional Message Streams: Up to 30 streams

Included
Highlights Servers: Up to 10 servers

Included
Highlights Custom sending domains: Up to 10 domains

Included
Highlights Email template editor & import tool: Included

Included
Highlights Full message retention: 45 Days (custom retention available as add-on)

Included
Highlights Users: Up to 6 users

Included
Highlights Inbound email processing: Included

Included

Platform — Platform

Highlights Emails per month: Starting at 10,000 emails/month

Included
Highlights Extra emails: $1.20 / 1,000

Included
Highlights Daily email limit: Unlimited

Included
Highlights Inbound Email - Transactional Message Streams: Unlimited

Included
Highlights Servers: Unlimited

Included
Highlights Custom sending domains: Unlimited

Included
Highlights Email template editor & import tool: Included

Included
Highlights Full message retention: 45 Days (custom retention available as add-on)

Included
Highlights Users: Unlimited users

Included
Highlights Inbound email processing: Included

Included

SendLayer

Starter

Highlights Monthly emails: 1,000

Included
Highlights Sender domains: 1

Included
Highlights Log retention: 3 days

Included

Business

Highlights Monthly emails: 5,000

Included
Highlights Sender domains: 3

Included
Highlights Log retention: 15 days

Included

Growth

Highlights Monthly emails: 10,000

Included
Highlights Sender domains: 5

Included
Highlights Log retention: 30 days

Included

Scale

Highlights Monthly emails: 20,000+

Included
Highlights Sender domains: 20

Included
Highlights VIP support: Included

How their prices changed

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

Postmark

August 27, 2026 Source
- Free — Developer tier: Free
- Basic — Basic: USD 15 monthly
- Pro — Pro: USD 16.5 monthly
- Platform — Platform: USD 18 monthly

SendLayer

August 27, 2026 Source
- Starter: USD 5 / month with annual commitment
- Business: USD 15 / month with annual commitment
- Growth: USD 25 / month with annual commitment
- Scale: Contact sales