gmail to is not working

  • 17 August 2022
  • 14 replies


emails from GMAIL to the SMS gateway, <phone.#> are NOT received as texts.

emails from OUTLOOK to the SMS gateway, <phone.#> ARE received as texts.

google has a gmail application “email to text” whereby one can gmail <phone.#> and receive text.  That is, google has their own email-SMS gateway.  When using this app, I DO receive the email as a text.

It appears that google is restricting emails to the tmobile email-SMS gateway,, to force customers to use googles app “email to text”.  Did I mention that google charges for the service?

Is there anyone who can shed any light on this?  Is there anyone who can email <phone.#> and receive a text?



14 replies


Oops, Maybe I was too quick to allege that google was nefariously dropping email/gmails to

24 hours ago, I sent email/gmail to  I just received a deliver status notification stating:

There was a temporary problem delivering your message to Gmail will retry for 47 more hours. You'll be notified if the delivery fails permanently.


Remote-MTA: dns; (, the server for the domain
Diagnostic-Code: smtp; 421 4.1.0 sender rejected AUP#CDRBL

I think T-mobile is using a third party named Cloudfilter to block spam texts and I am getting rejected.

Any thoughts?  What does AUP#CDRBL mean?


I having the very same problem…..Don’t know where to get helps???

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Hey friends, The service has some pretty strict spam filters. We want to avoid as much spam as possible, but it is also not a very robust service like regular texting or data services, so it is not designed to be used for any company uses either. From what you showed with the error message it looks like the message is coming from a seemingly generic email address. I don’t know if you changed the email address to keep your information private or if that is actually what you are sending it from. The spam filters that exists for the email to text service look for generic emails like that and block them by design. That filter also looks for things like alert@ info@ admin@ and many other email addresses that may be associated to a company or spam. 

I know that this may not be the news that you want to hear, but I hope it at least sheds a little light on the situation and gives you some other ideas on how to get those messages sent.

421 4.1.0 <g……> sender rejected AUP#CDRBL

Where g….. is may actual email address that I’m not going to show here.

Sometimes it works, sometimes it doesn’t.

We need this service reinstated, this is ruining my livelihood and productivity for my business with automated scripts i run using the tmomail service.  Please help!

@HeavenM , the thing is its my personal email, with no flags like admin, info, alert, etc.  this is pretty disappointing for what was once a great service.

@frito_bandito, i am getting the same error even when trying from outlook mail, this sucks.  its impacting my business and livelihood. 

Perhaps T-mobile could make a list of email addresses that are always allowed to send to each phone number. For example, it has an email address associated with each T-mobile account.


T-mobile could also allow each customer to add addresses to that list.


Using technology like SPF and DKIM it could verify that an email’s envelope sender domain matches the actual network mail exchanger from which it was sent.


Just an idea. As a long-time customer, I appreciate the service, when it works. 

Has this issue resolved for anyone? Not for me as of 2/25/2023.

FYI: I called TMobile support. They had me reboot my phone. They said they did NOT do anything like Spam settings on their side. They sent me a text and it worked. I went to my email and sent an email to and it said my email is blocked. I went to my email and sent an email and it worked! BTW, I tried to reset my email account with my phone number and they don’t recognize my number. Now there’s no way to reset my Outlook account. Some dude hijacked my account. Oh well, it was only used to send email to text. works for my phone number as of 2/25/2023.

Update… So, I logged into my Yahoo email, and I sent an email to, and I DID receive the text. However, when I use my app (a C# app) to sent a SMTP message to, the SMS message never arrived. I logged into my and use an email address specifically for this purpose, it did not work. Using the outlook login in my app doesn’t work either. It thinks it’s spam. It did work 8 months ago. So, I gave up. I decided to use Twilio. It costs $2.15/month for a toll-free phone number and $0.0109 (1.09 penny) per text. Heck! for $1.00 I can send 91 sms text messages.

I can email myself normally to my tmomail address and I get the text.   But I am not getting “verification email” from Gmail for example so that I can add it as a forwarding address so that I can create a filter for a specific email I want to forward

emails from GMAIL to the SMS gateway, <phone.#> are NOT received as text

I'm  having the same issue for ever, I will check with my new cell service before changing if they allow email to text. This service has never worked for me.


I can send email from or outlook via to my phone  But I don’t get the verification either.  I would like to be able to forward certain messages to my phone, but until the verification works, I guess not.


@tomobile, please look into the issue where the gmail verification messages are not going to sms.

I started having this problem a few days ago (as of 5/26/23).  I had been using it for many months and it was very reliable.  Six seconds after sending the SMS my phone would beep with the message.

Now it is very hit and miss, mostly miss.

The messages are always the same except for the inclusion of the current date and time.

Note, I had to use “;” (semicolon) instead of “:” (colon) or the message was never received.