Key Features

What it does

Sign in with Zoho on the Customer Login page.
Sign up with Zoho on the Create New Customer Account page.
Sign in with Zoho inside the guest checkout sign-in popup. The customer returns to checkout, logged in, with their cart intact.
Popup sign-in on desktop. Zoho opens in a small centred window, so the shopper never leaves your page.
Same-tab sign-in on phones and tablets, and whenever the browser blocks the popup.
Automatic account creation. A first-time Zoho user gets a Magento customer account using the name and email from their Zoho profile.
Existing accounts are reused. A matching email on the same website logs in to the existing account. No duplicates.
Default customer group for every account created through Zoho.
11 Zoho data centers — US, Europe, India, Australia, China, Japan, Canada, Saudi Arabia, United Kingdom, Singapore, and United Arab Emirates.
Auto-detected redirect URI shown in the admin, ready to copy into the Zoho console.
Optional custom redirect URI for proxies and unusual URL setups.
Encrypted client secret in the database.
Per-website and per-store-view settings.
Dedicated log file — var/log/zohosso.log.

Not included	Why it matters
Admin-user login with Zoho	Only storefront customers sign in with Zoho.
Other providers (Google, Facebook…)	The button list holds Zoho only.
Syncing data back to Zoho	The extension reads the Zoho profile once at sign-in; nothing is written to Zoho.
Address, phone, or company import	Only email, first name, and last name are copied.
REST or GraphQL login	There is no API endpoint. PWA/headless storefronts need a customisation.
Hyvä templates	The button is built for Luma-based themes. Hyvä needs a compatibility layer.