Most of the folks are opening your email campaigns on a smartphone 📲. Case in point, HubSpot reports 41% of all email views 👀 come from mobile devices. Here’s the full breakdown:

‒ Mobile ➟ 41%

‒ Desktop ➟ 39%

‒ Tablet ➟ 19%

‒ Other ➟ 1%

On that account, here are FOUR mobile-first email marketing optimizations:

Keep the subject-line short and to the point. Campaign Monitor recommends a max of 41 characters. Why? Simple… It’s because your phone’s screen isn’t very wide ↔️. If your subject line exceeds the character limit, for instance, the inbox is just gonna show a generic, “•••” for whatever text doesn’t fit.
Make any buttons 🔘 in the content of your email easily tappable. If it’s just hyperlinked text, for instance, it could be easy for a viewer to overlook or mis-click a link. Point is, make sure any important links are easy targets for the press of a viewer’s thumb 👍
Use LARGE-SIZED TEXT. If you’ve got excessive line spacing or if the email is just hard to read because your font is too tiny, it’s gonna drive down the overall performance of your campaign.
Avoid using email templates with side-bars, columns, or any special layouts other than a single-column ↕️. Thanks to social media, we’re all used to scrolling through feeds. My thought is… Your email should function the same. If the user has to pinch-and-zoom to read your email, then—frankly—your email’s broken.