Are you aware that you can pay Google to reach peoples inbox? Specifically the ‘promotions’ and ‘social’ tabs of their inbox. This can prove to be a very effective tool in your promotional arsenal with the potential for some of the lowest CPC of any campaign in your Google Ads account. Do not make a rookie mistake and confuse clicks with visits to your site. You would need to specifically setup a Google Ads campaign which converts a click on a subject line to a visit to a site. In reality when they open your ad it is delivered in a format similar to an email and you are in reality paying for an email open. If they save the ad it is converted to an email, they can forward the ad to others and you are not charged for any of those interactions.
You aren’t charged when people interact with your expanded ad. You’re only charged once—for the click that expands your ad in the first place.
Support, Google Ads
To be fair it is a perfectly reason charging model but it can prove frustrating if monitoring CPC account wide and these stats will get disrupted by Gmail Ad campaigns.
If you want help and support with your Google paid ad campaigns we can help on an ad-hoc basis or provide performance based pricing for ongoing management of ad accounts that incur a minimum spend of $2000 a month.