Gmail Add-on

The Workestra Gmail Add-on adds a sidebar panel to Gmail compose windows. Pick which booking link to insert, and a Workestra-styled snippet (link, offered slots, or team page) drops into the email body.

The Gmail equivalent of the Outlook add-in — same patterns, different platform.

Gmail add-on panel

Screenshot needed — Gmail compose window with Workestra panel open on the right

What it does

Insert booking link — drop a Workestra link
Insert offered slots — pick 3–5 specific slots, formatted as a clickable HTML block, that the recipient picks from
Insert team page link — drop a team page URL
Open Workestra calendar — link to /calendar

Installation

The add-on is published to the Google Workspace Marketplace as "Workestra Scheduling" (when listed). Install:

Open the Marketplace listing
Click Install → grant the requested scopes (Gmail compose, contacts read for autofill)
The Workestra panel appears in the Gmail right sidebar

For IT-managed Workspace deployments, admin install via the Google Admin console → Apps → Marketplace apps → Add app.

Authentication

Same as the Outlook add-in: signs into the same Workestra session as the web app.

Source

Source lives in apps/gmail-addon/ of the Workestra monorepo. It's a standard Apps Script + Card Service add-on.

What's NOT supported

Gmail desktop apps (mac/Windows/iOS native Mail) — those don't support Gmail add-ons; use the web Gmail interface instead
Outlook for Mac with Gmail account — that goes through the Outlook add-in instead
Calendar-level read/write from the Gmail add-on — that's the Google Calendar integration