Incidentsby GlyphRetroactive Incident - Issues with encoded Special Characters in email From headers
Aug 5, 18:00 UTCAug 5, 18:00 UTC
Duration
0m
Impact
Informational
Root cause
Not disclosed
Twilio, 90 days
548 incidents
Affected
Not listed by the vendor.
Final update
Starting on July 16th 2026, to July 31st 2026, customers may have encountered errors when sending emails via SMTP with encoded special characters in the From header. Our engineers noticed the issue and apply a fix to correct it. There is no data loss. The issue has been resolved, and all impacted services are operating normally.
Timeline
- Resolved · Aug 5, 18:00 UTC
Starting on July 16th 2026, to July 31st 2026, customers may have encountered errors when sending emails via SMTP with encoded special characters in the From header. Our engineers noticed the issue and apply a fix to correct it. There is no data loss. The issue has been resolved, and all impacted services are operating normally.
More from Twilio
Full historySMS Delivery Receipt Delays from Twilio to Bouygues Telecom Francestill openSMS Delivery Failures from Germany to a Subset of Twilio Long Codesstill openSMS Delivery Failures from Twilio to ETL Laosstill openSMS Delivery Failures from Twilio to MTN Nigerialasted 6h 1mSilent Network Authentication (SNA) Failure Increase and Gateway API (Lookup API) Failure Increase on EnStream in Canadalasted 14h 13mSMS Delivery Receipt Delays from Twilio to Globe Philippineslasted 13h 17m