// One SenderDeck identity
Sign in once.
Use Codex or Claude.
Choose the mailbox that will establish your SenderDeck identity. SenderDeck connects that mailbox and keeps every additional Google or Microsoft account separate.
Choose your provider
You will review the provider permissions before anything is connected.
Your Claude or OpenAI account identifies you only to that AI service. SenderDeck uses the provider you choose here to protect your mailbox connections.