Enable AI Provider and write or design email
Connect a provider for writing, designing, and editing messages.
Configure and enable one provider
- Open Settings → AI Provider.
- Select OpenAI, Claude, or Gemini and choose a supported model from the dropdown.
- Enter your API key, then use Test connection to check the key/model. Review success or the error details.
- Turn on AI Provider. Enabling requires a successful connection response for the current provider, model, and key.
Changing provider, model, or key switches AI off until the new configuration is verified. Saved keys appear masked; the trash action asks before removal. One provider is active at a time. Provider internet/API charges are separate from the AeroMailer license; a consumer chat subscription is not automatically an API key.

Write, design, or revise
Use Write with AI in supported composers and plain-text templates, or Design with AI for HTML. Describe the audience, goal, tone, offer, and call to action. Review wording, links, factual claims, personalization, and formatting before applying or sending.
Grey prompt suggestions are not inserted until you press Tab. Preset suggestions do not need a generation request. The separate AI personalize suggestion switch asks your provider for tailored suggestions and may add API usage. You can still write your own prompt.
What the master switch controls
AI-off hides writing/design/build-with-AI entry points and the top-bar AI Assistant, and prevents new provider requests for AI replies, summaries, and classification. Saved agents and credentials remain for later use. Workflows that depend on AI pause; ordinary mail and eligible non-AI functions remain available. Requests already sent to a provider cannot be recalled.
For cross-app assistance, file review, reports, and automatic preference memory, see AI Assistant. For AI-generated incoming replies, see manual approval queues.