Ballottrax is a simple service, sign up once and you'll get a text or email every election once your ballot has been sent/received. Your ballot envelope contains instructions and a QR code on how to sign up.
Multnomah county had this a decade ago, looks like getting a new elections county clerk paying dividends already. Especially given the horrible record in Clackamas under the past elections clerk(ballots not sent to thousands, duplicate ballots sent, abysmal processing times for the county) this is some much needed basic transparency to allow citizens to 3nsure their vote counts.