DNS checked
SPF, DKIM, and DMARC state confirmed before production traffic moves.
Send OTPs, invoices, alerts, and product notifications through SMTP or API, verify your sending domain, and see exactly what happened when a message fails.
include:whyemails.comwe._domainkeypolicy reviewPOST /v1/send
from: hello@acme.com
to: customer@example.com
status: queued msg_4Hf9z2domain okinbox eventtemporary deferralEach step leaves a trace: domain readiness, request acceptance, signing, queue state, receiving server response, and webhook result.
SPF, DKIM, and DMARC state confirmed before production traffic moves.
API or SMTP send enters the queue with a traceable message id.
Sender identity is attached before handoff to receiving servers.
Delivery, bounce, retry, and webhook outcomes stay visible.
Bring over your sending domains, keep the SMTP or API path your app already uses, test safely, then move production traffic when the records and delivery checks are clean.
Plan a migrationAPI mapping Routes mapped DNS review Records checked SMTP relay Relay tested credential swap Cutover ready 2.1s18smailbox unavailable200Review domain state, message history, bounce reasons, retries, and webhook outcomes from the same place your team sends invoices, login codes, alerts, and account email.
A single product-led timeline connects the parts teams usually stitch together across DNS tools, mail servers, provider dashboards, and webhook logs.
Start free for domain setup and first sends, then move into the plan that matches your monthly volume, delivery visibility, and support needs.
Test domain setup and first sends.
Start freeMove a small app into production.
Start sendingGet clearer delivery visibility for a growing product.
Choose BusinessPlan migration, onboarding, and commercial needs.
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