Email warmup for developers
Shipping transactional or product email? Make sure password resets, receipts and notifications actually arrive — not just return a 200.
A successful API call doesn't mean the email reached the inbox. Developers need the same deliverability fundamentals as marketers: authentication, reputation and placement visibility.
Inbox placement tracking
See whether your test mail lands in Primary, Promotions or Spam, plus SPF/DKIM/DMARC results, before you run a real campaign.
Live reputation scoring
A 0–100 score built from real signals — authentication, bounces, complaints, placement and engagement — so you always know where you stand.
Gradual, human-like warmup
Volume ramps day by day from a safe baseline so mailbox providers see steady, organic growth instead of a spammy spike.
Deliverability is part of the stack
Verify SPF, DKIM and DMARC for your sending domain with our free checkers, and make sure you're not blacklisted. These are the email equivalent of a green CI pipeline.
When you spin up a new sending domain or mailbox, warm it up before relying on it for critical transactional mail. The Enterprise plan includes API access for teams that want to integrate deeper.
Frequently asked questions
Is there an API?
API access is included on the Enterprise plan. The free deliverability tools (SPF/DKIM/DMARC, blacklist, email verification) are also great for manual checks during development.
Ready to land in the inbox
Connect your inbox and start building real sender reputation today — free to start.
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