My guess is that when they decided to rewrite the web front-end in React, they also put off any major mobile updates until they could port the mobile apps to Re

My guess is that when they decided to rewrite the web front-end in React, they also put off any major mobile updates until they could port the mobile apps to React too. Hopefully there is a big mobile update coming soon now that ProtonMail 4.0 is out of beta.