🚨 Google is Ending Support for “Less Secure Apps” on March 14, 2025

Google Workspace will no longer allow SMTP logins using just a username and password, including with:

• Basic SMTP email clients (like Supabase’s SMTP integration)
• Services that rely on App Passwords
• Services that don’t use OAuth 2.0

🔐 What This Means for You (Using Gmail SMTP with Supabase)

Starting March 14, 2025, you won’t be able to send email via smtp.gmail.com with username + app password from Supabase or similar tools unless:

1. Google supports OAuth-based SMTP for service integrations (it currently doesn’t, for most third-party platforms).
2. Supabase adds support for OAuth SMTP, which it doesn’t yet offer.

So if you’re using Google Workspace SMTP with Supabase today (via smtp.gmail.com + app password), it will stop working after March 14, 2025.

✅ What You Should Do Instead

✅ Option 1: Switch to a Real Email Provider with SMTP

Use a dedicated email provider that allows SMTP without OAuth. These providers work great with Supabase:

ProviderFree Tier?NotesResendYesModern, API-first, excellent with SupabaseMailgunYesReliable, with SMTP or APIPostmarkTrial onlyFast delivery, clean templatesSendGridYesFree up to 100/dayBrevoYesSMTP…