How to send cold emails programmatically without using a GUI interface

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Cold email built for devs, not dragged from templates.

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Mailblock

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Mailblock is a cold email platform designed for developers who’d rather write code than fight clunky UIs. With full SDK access, AI-assisted writing, and flexible campaign logic, you can automate outreach from your own stack, no CSV juggling, no bloated dashboards. Built for solo founders, technical teams, and indie hackers who want results without breaking the bank. Email marketing that fits your workflow, not the other way around.

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What to expect from an ideal product

1. Send emails directly through code using Mailblock's SDK instead of logging into web interfaces or clicking through dashboards
2. Write and execute email campaigns with flexible logic and conditions programmatically rather than manually setting up sequences in a UI
3. Integrate cold email functionality straight into your existing codebase and workflow without switching between different tools
4. Automate recipient management and campaign triggers through API calls instead of uploading CSV files and managing contact lists manually
5. Build custom email automation scripts that handle everything from content generation to sending schedules without touching a graphical interface

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