SendClipper puts sending and receiving email on the same domain

Field notes

SendClipper combines REST and SMTP sending with campaigns, reusable block templates, delivery webhooks, and domain-based mailboxes. Its setup asks users to publish SPF, DKIM, and DMARC records, then points MX records at the service for incoming mail. The homepage also describes a staging SMTP server that captures messages, applies spam and HTML checks, and prevents test mail from reaching real recipients. A free tier advertises 3,000 emails without a credit card.