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Gmail SMTP Setup

Step-by-step setup for Gmail and Google Workspace, including creating the App Password Google requires.

Your normal Gmail password will not work

Google blocks basic password sign-in for SMTP. You must create a 16-character App Password, which requires 2-Step Verification to be on.

Step by step

  1. 1

    Turn on 2-Step Verification

    Go to your Google Account → Security → 2-Step Verification and complete the setup. App Passwords are unavailable until this is on.

  2. 2

    Create an App Password

    Google Account → Security → App passwords. Name it "Vecta" and copy the 16-character code Google shows you. It's displayed once.

  3. 3

    Add the config in Vecta

    Use the settings below, pasting the App Password (spaces don't matter) into the password field.

  4. 4

    Save and check the test

    Vecta sends a test email straight away. A Healthy badge means you're done.

Host:     smtp.gmail.com
Port:     587
Username: you@gmail.com   (or you@yourdomain.com on Workspace)
Password: the 16-character App Password
From:     the same address as the username

Sending limits

Account typeApproximate daily limitSuggested cap
Free Gmail500 recipients/day300
Google Workspace2,000 recipients/day1,500

Google counts recipients, not messages

An email to 10 people counts as 10. Exceeding the limit locks sending for around 24 hours.

Common problems

  • 535 Authentication failed. You used your normal password instead of the App Password, or 2-Step Verification isn't on.
  • From address rejected, on Workspace, the From address must be your address or a verified alias.
  • Sending suddenly stops: you've hit the daily limit; it resets automatically.

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