SteadyTabs

SteadyTabs is a browser extension adds a custom domain sender picker to Gmail and routes messages through an email provider.

SteadyTabs is a browser extension designed for Gmail users who want to keep sending emails from custom domains after Gmail ends support for third-party sending addresses in January 2027. It adds a From picker directly into the Gmail compose window and routes outgoing mail through personal accounts with supported providers like Resend, Amazon SES, Postmark, or Mailgun. The tool handles attachments, pasted inline images, threaded replies, and saves a copy to Gmail via BCC to keep history searchable. It is built for individuals using Gmail on desktop who manage multiple custom email addresses and domains. API keys and messages remain stored locally in the browser and do not touch external servers.

SteadyTabs at a glance

Best for: Software engineer
Runs on: Web, Chrome extension
Pricing: 7-day free trial; $15 once with no subscription
Released: October 2026
Category: AI coding tool
Website: steadytabs.com

Key features

Adds a custom From picker to the Gmail compose window
Sends mail through personal email provider accounts
Supports attachments and dragged files
Converts screenshots into inline images
Maintains email thread history and headers
Saves a copy of sent messages back to Gmail via BCC
Supports multiple addresses and custom domains

Use it for

Send emails from custom domains inside Gmail
Reply to messages while keeping correct thread headers
Manage multiple custom email addresses in one inbox

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