Gmail

Gmail never accepts your Google Account password from a mail client like mcp4mail. You need an app password, and Google only lets you create one once 2-Step Verification is on.

1. Turn on 2-Step Verification

1. Sign in at myaccount.google.com.
2. Open Security.
3. Under How you sign in to Google, open 2-Step Verification and follow the steps to switch it on.

Skip this if it is already on.

2. Create an app password

1. Still in Google Account → Security, open App passwords. If you do not see it, search for "App passwords" at the top of the page, or go straight to myaccount.google.com/apppasswords.
2. Name it mcp4mail and choose Create.
3. Copy the 16-letter password it shows. Google shows it only once; the spaces do not matter.

3. The settings to use

Setting	Value
IMAP server	imap.gmail.com
Port	993
Security	SSL/TLS
Username	your full Gmail address, e.g. jana@gmail.com
Password	the app password from step 2

If it still does not connect

• "Invalid credentials" — you are most likely using your Google Account password. Create an app password as in step 2.
• There is no "App passwords" page — 2-Step Verification is off, or you sign in only with a security key under Advanced Protection, which does not allow app passwords.
• A work or school account (Google Workspace) — your administrator can switch off IMAP or app passwords for the whole organisation. If either is off, only they can turn it back on; ask them to allow IMAP access and app passwords for your account.
• It worked and then stopped — changing your Google Account password revokes every app password. Create a new one.