Can't get mail to synch on two macs

Frustrating! Don't worry, I'm here to help you troubleshoot the issue. Let's go through some steps to get your mail to sync between two Macs.

Before we begin:

1. Ensure both Macs are running the same version of macOS and have the same iCloud account set up.
2. Make sure you're using the same email account (e.g., Gmail, iCloud, or Exchange) on both Macs.

Step 1: Check iCloud Mail Settings

1. On both Macs, go to System Preferences > iCloud > Mail, Contacts, Calendars.
2. Ensure that "Mail" is enabled and set to "Sync" or "Merge" (depending on your preference).
3. Check that the email account is set up correctly on both Macs.

Step 2: Check Mail App Settings

1. On both Macs, open the Mail app.
2. Go to Mail > Preferences > Accounts.
3. Select the email account you're having trouble syncing.
4. Check that the account settings are identical on both Macs, including the username, password, and server settings.

Step 3: Check for Conflicting Accounts

1. On both Macs, go to System Preferences > Accounts > Login Items.
2. Look for any conflicting email accounts or apps that might be interfering with the sync.
3. Remove any unnecessary accounts or apps to ensure a clean sync.

Step 4: Reset Mail Sync

1. On one Mac, go to System Preferences > iCloud > Mail, Contacts, Calendars.
2. Click the "Reset" button next to "Mail" to reset the sync.
3. Wait for the sync to complete, then try syncing again.

Step 5: Check for Mailbox Permissions

1. On one Mac, open the Terminal app (in Applications/Utilities).
2. Run the following command to check mailbox permissions: ls -l ~Library/Mail/V2/Mailboxes
3. Compare the output with the other Mac to ensure the mailbox permissions are identical.

Step 6: Try a Manual Sync

1. On one Mac, open the Mail app.
2. Go to Mail > Fetch Mail.
3. Select the email account you're having trouble syncing.
4. Click "Fetch" to manually sync the email account.

Step 7: Check for Any Conflicting Apps

1. On both Macs, go to System Preferences > Users & Groups > Login Items.
2. Look for any apps that might be interfering with the sync.
3. Remove any unnecessary apps to ensure a clean sync.

If none of these steps resolve the issue, you may want to:

• Restart both Macs and try syncing again.
• Contact Apple Support or your email provider's support team for further assistance.
• Consider resetting your Mail app settings or reinstalling the Mail app.

I hope these steps help you resolve the issue and get your mail syncing between your two Macs!