Great question, and it's smart to be proactive about this during active LP outreach.

Unfortunately, Decile Hub does not currently provide delivery confirmation or spam folder detection, so directly checking with the recipient is the most reliable way to confirm. That said, here are a few steps that can help improve deliverability:

• Connect a Gmail or Microsoft account if you haven't already. Emails sent through your own connected account use your personal email reputation, which typically delivers much better than emails sent through third-party servers like SendGrid.
• Domain age matters. If you're sending from a newer domain, recipient servers may flag finance-related emails as spam, especially to contacts who haven't received mail from you before. Warming up the domain with lighter, conversational emails first can help.
• Avoid overly generic or template-heavy content. Personalizing your emails reduces the chance they get caught by spam filters.
• Ask recipients to add you to their contacts or allowlist your domain. This is a simple but effective ask you can include in early outreach.
• Test across multiple inboxes (Gmail, Outlook, etc.) since spam filter behavior varies by provider.

For your current LP outreach, a quick heads-up to recipients to check their spam folder is a totally reasonable and common ask, especially for a first touchpoint. You can frame it naturally: "If you don't see my email, please check your spam folder and mark it as not spam."

Hope that helps, and feel free to reach out if you run into anything else!