Is there any way to remove the “via” that shows up on emails displayed in Google?

Generally, over the last few years this has become common-place with most third party messaging services sending messages to Google accounts, and recipients have quickly become accustomed to this. Emails sent from your Webmail account probably won’t show this information because it’s routing directly through your Google account. For automated emails such as reminders, notifications and scheduled emails coming directly from Solve, the additional info can be removed by sending these types of messages directly through your Google account using Solve’s Outgoing email service add-on.

For more information, check out the official support page from Google.