Deliverability
The deliverability guide: getting messages to the inbox (and the handset)
Deliverability is where good campaigns quietly die. A practical checklist for email and SMS that actually lands.
WWeZend TeamMay 8, 2026 · 8 min read
You can write the perfect message and still lose if it never reaches the customer. Deliverability is a discipline, not an afterthought.
Email essentials
- Authenticate: SPF, DKIM and DMARC, aligned to your sending domain.
- Warm up new domains and IPs gradually.
- Prove consent: double opt-in and one-click unsubscribe.
- Watch engagement: sunset unengaged contacts before they hurt reputation.
SMS essentials
- Use registered sender IDs and compliant routes per country.
- Prefer direct binds for critical traffic to cut latency.
- Respect quiet hours and frequency caps.
Let automation guard you
WeZend's deliverability autopilot monitors reputation and bounces, then throttles or pauses risky sends before they damage your standing. Consent, quiet hours and frequency caps are enforced automatically on every send — so good practice is the default, not a manual checklist.