Mutant Mail

Waitlist management software for product launches. Create branded waitlist pages, collect and verify email subscribers, manage signups with tags and analytics. Free plan includes 100 subscribers/month, 1 waitlist, and API access.

100 emails/month free, unlimited DMARC weekly digests.

Email API, SMTP, 500 emails/month free for transactional emails, 100 API requests/day

Email API with REST API and SMTP integrations, free for upto 3,000 emails/month.

Free 5 Burner Email Addresses, 1 Mailbox, 7-day Mailbox History

SMTPfast is a simple email API for developers with a free tier that includes 3,000 emails/month, 1 domain, and 1,000 contacts, with no credit card required.

Detect and block disposable email addresses. Free plan of 250 lookups a month and no card required.

Block disposable emails, catch typos, and validate MX records via a simple API. 100 free requests/month.