Prompt
Do I need fallback email delivery for critical messages?
Latest observation
Oct 5, 2026
OpenAI APIWeb search: off
Yes—if the messages are truly critical, you should have a fallback delivery path.
Email is useful, but it’s not reliable enough by itself for high-priority notifications because of:
- spam filtering
- delivery delays
- outages or degraded service
- typoed addresses
- inbox saturation
- user-side rules/filters
When fallback is worth it
Use fallback if the message is:
- time-sensitive
- operationally important
- safety-related
- financial/account-impacting
- required for compliance or incident response
Common fallback options
Depending on urgency:
- SMS for short urgent alerts
- push notifications for app users
- in-app banners
- phone call / IVR for truly severe incidents
- secondary email provider as a redundancy layer
- webhooks / Slack / PagerDuty for internal ops alerts
Practical approach
A good pattern is:
- send email
- wait a short interval
- if undelivered/unopened and still urgent, escalate via another channel
- keep retrying or escalating based on severity
Rule of thumb
- Non-critical updates: email alone is fine
- Critical messages: don’t rely on email alone
If you want, I can help you design a simple fallback notification strategy based on your use case.