Sender display name
If recipients see only your email address instead of a name in the "From" field, the mailbox's display name needs to be set. You can edit the display name per mailbox in Maildoso — see Change names of mailboxes. If you send through a sequencer, also confirm the sender name configured there, since the sequencer can override what recipients see.
Profile picture
Profile pictures (sender avatars) are available on Google Workspace mailboxes only. We don't add them on SMTP mailboxes, where a profile picture makes the mailbox easier to footprint and flag by spam filters (see Can I add a profile picture to my mailboxes?).
On Google Workspace mailboxes, a profile picture is set on the mailbox and can take time to appear for recipients — providers like Gmail cache sender avatars, so a newly set photo may not show immediately on the recipient side or inside your sequencer. Use a clear, square image.
Animated GIFs are not supported as profile pictures — use a static image (PNG/JPG).
If your photo isn't showing in your sequencer or on sent emails after some time, contact support with the mailbox name and we'll check it.