Senly first tries to send the confirmation email from the mail account your host has connected (Gmail, Outlook or IMAP). If the host has no connected account, Senly falls back to the system default `noreply@senly.io` (or the whitelabel equivalent).
Connect your own mailbox via Settings → Integrations → Email for better deliverability — mails then come from your real address and are less likely to land in spam.