Carrier email-to-SMS gateways (@txt.att.net, @vtext.com, @tmomail.net) shut down in 2025. Your monitoring still emails the page — the carriers black-hole it silently. Fix it in 30 minutes. No PagerDuty, no Twilio code.
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Real SMS on the on-call phone — not a black hole.
What actually reaches the phone when your monitoring fires an alert.
@vtext.com et al.)30–40%Carrier gateways accept the email at the MX, then drop it silently. Your dashboard is green; your pager is dead.
The gateway accepted it at the MX; the carrier dropped it after. Your monitoring only sees the SMTP handshake.
The whole rotation is on dead carrier domains, so every tier fails together.
Carriers stopped issuing non-delivery receipts. The text simply never existed.
The alert fired. The SMS didn’t. You find out from a customer tweet.
Find the SMS recipient pointing at 5125551234@vtext.com — every on-call tier.
@sendemailtotext.comSame number, different gateway: +15125551234@sendemailtotext.com. No code, no SDK.
On-call’s phone buzzes. Done. Replies thread back to your inbox.
@txt.att.netHard cutoff — no bounce, no NDR.
@tmomail.netSilent. Accepts mail, drops it.
@vtext.comAlready 30–40% delivery today.
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Small teams.
DevOps/SRE & MSPs.
High-volume NOCs.
Swap @vtext.com for @sendemailtotext.com. Fire a test. On-call gets paged.