I built sMail because I kept running into the same problem — I needed to send a few hundred personalized emails to a contact list but didn't want to pay $20/month for Mailchimp just to do it occasionally.
So I spent a couple of weeks building a simple Windows desktop app that does it through Gmail SMTP directly.
How it works: - Load your contacts from a CSV or Excel file - Write your subject and message (supports {name} for personalization) - Optionally attach files - Preview emails before sending - Hit send and watch the progress bar
It uses Gmail SMTP with App Password authentication so nothing goes through any external server — emails send directly from your Gmail account.
Built with Python. One-time $15, no subscription, no account needed beyond your Gmail.
Happy to answer any technical questions about how it's built or discuss the SMTP approach vs API-based senders.
Link: ahnix.gumroad.com