GMail problem sending E-mails, revisited

GMail has made yet another new security change that can cause Campground Master to fail sending E-mails.  Previously there was the issue requiring "Allow less secure apps".  Now the new Sign-in options of "2-step verification" or "Use your phone to sign in" will also block Campground Master.  Information for solving both issues is below (and in the new online documentation for SMTP setup):

If Campground Master suddenly stops being able to send confirmation E-mails and you use a GMail account (using the GMail SMTP server), it's most likely due to the new features of Google that blocks SMTP for a lot of people until you change a couple security options.

To solve it:

1. Go to https://myaccount.google.com/

2. Sign in if needed.

3. Go to the "Security" page (previously "Signing in")

4. Toward the bottom you will find a box/section 'Allow less secure apps'.  Make sure it's "on" (click to the right end of the slider, it should turn blue).

New: Also note that GMail will not allow SMTP access if you have "2-step verification" or "Use your phone to sign in" enabled for your account.  So make sure these are not enabled for your GMail account.

You will likely be warned that you have "security issues" with these disabled.  Unfortunately that's the only way GMail will allow SMTP access.  If you don't feel comfortable with this, then we recommend using your own web host's SMTP server instead of GMail.

Of course if you ever change your GMail password, then you also need to make sure Campground Master has your new password in Maintenance / E-mail Setup / SMTP Setup (or in older versions, Maintenance / Park Setup / SMTP Setup).