How to Send Onboarding Emails with C#
Learn how to send onboarding emails from your C# application using AISend's AI-powered email API. This guide covers setup, implementation, and best practices for guiding new users through product setup.
What are onboarding emails?
Onboarding emails are transactional emails triggered by user actions, specifically for guiding new users through product setup. These emails are critical to your application's user experience — if a onboarding email doesn't arrive, users lose trust in your product. Onboarding emails typically have high open rates (60-80%) because recipients are expecting them. This makes deliverability especially important — you need an email API that ensures these messages reach the inbox, not the spam folder. AISend's AI-powered routing selects the best email provider for each recipient, maximizing inbox placement for your onboarding emails.
Setting up AISend with C#
Start by creating a free AISend account at aisend.app — no credit card required. From your dashboard, create an API key. Call AISend's REST API from C# using your preferred HTTP client. The API accepts JSON payloads with from, to, subject, and html fields. For production use, store your API key in environment variables — never hard-code credentials in your source code.
Sending onboarding emails
To send a onboarding email, make a POST request to the AISend API with four fields: from (your verified sending domain), to (the recipient's email), subject (a clear, descriptive subject line for your onboarding email), and html (the email body). For onboarding emails specifically, keep the content focused and actionable — include only the information the user needs for guiding new users through product setup. Avoid promotional content in transactional emails as it can hurt deliverability and may violate anti-spam regulations. AISend's AI automatically scores your content for deliverability before sending.
Best practices for onboarding emails in C#
Send onboarding emails immediately when triggered — delays frustrate users, especially for time-sensitive emails like onboarding. Use a background job queue to avoid blocking your application's response time. Include clear branding so users recognize your email. Keep subject lines descriptive and specific (e.g., "Your onboarding from [AppName]"). Set up webhook handlers to track delivery status and handle bounces. Always include both HTML and plain text versions for accessibility. Use AISend's domain verification to set up SPF, DKIM, and DMARC for maximum deliverability.
Why use AISend for onboarding emails?
AISend is built specifically for transactional emails like onboarding notifications. AI-powered multi-provider routing ensures your emails reach the inbox by selecting the best provider (AWS SES, Postmark, or SMTP) for each recipient. Content scoring catches deliverability issues before they affect your sender reputation. And the API is designed to be developer-friendly — send your first email in under 5 minutes with the free tier (1,000 emails/month, no credit card required).
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