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Mailpace vs Notion API
People
Price
Published entry price
$10+per month
Free
Developer APIs
Annual estimate10 people, entry price
$120+
Flat rate
Free
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Developer APIs
Overview
Focus
Developer APIs
Developer APIs
Product
Simple transactional email API focused on deliverability with no tracking pixels, DKIM/SPF setup, and developer-friendly REST and SMTP access.
Notion's API for building integrations with the Notion workspace including databases and pages.
Headquarters
London, United Kingdom
San Francisco, California
Company size
2-10 employees
501-1,000 employees
Founded
2021
2021
Pricing details
Plan
Published entry price
Published rate
$10+ / month
Free
Billable seats
Flat rate
Free options
Free plan, Free trial
Free plan
Pricing source
Source updated
Nov 1, 2026
Oct 29, 2026