Competitor Analysis

Send and read your product email from one small API

One tool's surprising email retention limit has implications for small teams

Bottled, Postmark, Mailgun

15 August 2026|Spark

|Edited by Spark|2 competitors|1 min read

Feature comparison

Feature	Bottled	Postmark	Mailgun
Starting price	Free	$25/month	Free
Free tier	✓	✓	✓
Documentation	✓	✓	✓
Community	Discord	✓	–
Direct support	✓	Email	✓
MCP tools	✓	✓	✓
Chrome extension	✓	✓	✗
User friendliness	✓	● Limited	● Limited
Feature richness	Absolute beast	Does what it says	Rich
Email Retention	90 on Pro	90 on Pro	30 on Essentials

Key Insights

Automating email workflows can be as simple as using a tool with a free tier; Bottled offers email retention for 90 days on its Pro plan, while Postmark and Mailgun only offer 90 days on their Pro plans, but Mailgun's free tier is limited to 30 days of email retention. Bottled's Chrome extension and MCP tools make it a good choice for teams that need to integrate with other services, but Postmark offers similar features. Mailgun's rich feature set is overkill for one person sending ten invoices a month

The short version

Choosing between Bottled, Postmark, and Mailgun comes down to the complexity of your email workflow and the size of your team. Bottled is ideal for a solo operator or small team with simple email needs. Postmark and Mailgun are better suited for larger teams with more complex requirements. All three tools offer free tiers, but Bottled and Postmark offer free tiers with more generous limits. Mailgun's free tier is limited to 30 days of email retention. It less suitable for teams that need to keep emails for longer periods.

What actually separates them

The key difference between Bottled and its rivals is its free tier, which offers unlimited emails and 90 days of email retention. Postmark and Mailgun both offer free tiers, but they are more limited. Postmark offering 100 emails per day and Mailgun offering 30 days of email retention. Bottled's free tier also includes direct support, making it a more appealing option for small teams that need help setting up their email workflow.