The photo showing when you send your emails is not a MailerLite feature; the profile picture in MailerLite is only for internal usage. Having a profile picture set on the user's inbox depends on where the particular mailbox is pulling the icons from. For Gmail, you can create a Google Apps account under the sender's email and add a picture there.
🤳 We recommend using Gravatar to set an avatar, as many mailbox providers use it!
To set up Gravatar:
Sign up for a Gravatar account using the same email address configured in MailerLite.
Upload your desired profile picture to your Gravatar profile.
Once configured, email clients supporting Gravatar will automatically display the uploaded image.