HACKER Q&A
📣 tcrhelpforsms

Escape from TCR? Family shared SMS


My wife is a bit particular and when we moved in together want there to be a household phone. So we signed up with a VoIP service and things worked. When we bought a home together, life got more complicated. There were utilities, contractors, service people, deliveries, etc. One day we realized that some of these folks would frequently send texts to our house number instead of calling, which we would never receive. So we upgraded our VoIP service/plan with a SMS option, and it was great. We could both just keep up to date on all the various things and either of us could respond as our schedules allowed, on any of our devices. We could even send images as MMS would allow to make communication clearer ("See this is exactly where things are going wrong", etc.)

And as with many things in life, human nature has pretty much ruined it. To combat SMS spam, as far as we can tell, all business SMS usage needs to be approved through https://www.campaignregistry.com/ now. And recent years, it has been brought to our attention that the service we are paying for is really intended for businesses. We are increasingly hitting weird blocks on messaging due to being grandfathered in before TCR. It has gotten to the point where we are on the verge of registering a business just to keep our functionality. Except even just having a registered business may not be enough because TCR requires all kinds of detailed information about your business and its practices.

So we are at a bit of a loss what else to do here. We could concede and one of us gets the responsibility of the "designated" cell phone number to handle everything household related. It is further complicated by my being an Apple fanboi and her a Windows/Android zealot. If we both used Apple devices we could maybe finagle something out by buying a dedicated iPhone for the house number and then take advantage of the cross-device Messages interoperability. There is Google Voice, and even ignoring my dislike for them, I don't feel they can necessarily be trusted not to drop the product or ban us for arbitrary reasons. Additionally, when it comes to actual phone calls, while Google Voice can forward calls to a number, I am not aware of any option to use it directly with regular handsets like many VoIP providers offer.

Are there really no companies in this space serving personal users? If not, that would be an excellent business niche for the entrepreneural folks in the audience.


  👤 WarOnPrivacy Accepted Answer ✓
TCR is as much a problem as it is a solution. As a pay-for play registry, it silently sabotages legit SMS messages from VoIP (MNVO, etc) - while allowing plenty of SMS traffic that end users don't want.

My phone # is a VoIP that forwards to my T-Mobile cell. SMS stopped reaching my phone because T-Mobile silently dropped them. I now forward them to my AT&T # (as long as I can) and to my email.

TCR explainer: The Campaign Registry is an industry-led effort to reduce spam, mostly spearheaded by T-Mobile. It isn't fully baked and is far too simplistically implemented.

It is supposed to (only) apply to SMS originating from biz. However, it is a wide and leaky net that captures both more and less than it should.

SMS from biz that pay/register with the TCR are unfettered; they can mass message. SMS sent from consumers via wireless carriers (like T-Mobile) are similarly unmolested.

But SMS sent from VoIP services (that compete with wireless carriers) get interpreted as biz-originated and get dropped silently.

Past that, another major issue with TCR is that it doesn't meaningfully discriminate between major SMS campaigns and the most minimal+routine SMS usage.

My biz clients provide product support to their customers and a handful of SMS messages may be involved. Even so, they are required to jump thru the same hoops as huge entities that send millions of SMS.

Within that context, I found that registering and working with TCR was so onerous/expensive that we're 1) ignoring it as long as we can and 2) considering workarounds.


👤 agwa
https://jmp.chat/ has worked well for me. SMS is delivered over XMPP, and phone calls use either XMPP or SIP (I use SIP). They use person-to-person routes for SMS so none of the TCR BS applies.

👤 pushcx
Google Voice will also be unworkable for your needs. More and more businesses prohibit customers from using anything except a cell phone number from a major carrier or MVNO reseller, perhaps assuming anything else is criminal activity. Customer service agents are never trained about this, so they'll say a number is "invalid" or "voip" (regardless of the actual service used) and cannot be used.

👤 abctx
I have about 30 numbers I use personally through voip.ms. They are all SMS/MMS enabled without TCR issues, signups, or requirements. Heck, I just checked and couldn't even find a way to register for TCR. Read into that how you'd like. I've had no issues with messages not being delivered to any mobile providers, but I honestly haven't tested this thoroughly. I just haven't had any messages I've sent not go through.

They have SIP support as well as an online SMS/MMS portal you can access from desktop or mobile. The only issue is they are still working on support to receive MMS by SIP protocol which might eliminate them from your consideration. You can send MMS by SIP currently though.

Phone number is only $0.85/month and then pay-per-usage of $0.0075/SMS and $0.02/MMS. Probably cheap enough to purchase a number to test it out to see if it will meet your needs. I've used them for years, have had no issues, and am happy with their service.

The only knock on using voip.ms is the initial setup is a little tedious and you need to understand the basics of how they are working with each part of the VOIP protocol. Their FAQs and guides are pretty well written to help you get set up.

I start with voip.ms and see if they meet my needs due to great customer service as well as low price and high stability. Then I look elsewhere if I need something voip.ms doesn't support.

edit: spacing for readability


👤 WarOnPrivacy
> We are increasingly hitting weird blocks on messaging due to being grandfathered in before TCR.

AFAIK, being grandfathered in before TCR isn't a thing. The blocking is inconsistent because the enforcement is inconsistent.

TCR enforcement (filtering SMS) is done by carriers who choose to use it on their services.

Primarily, TCR lists are used by wireless carriers, to filter SMS messages before they reach handsets. Primarily, that carrier is T-Mobile.

TCR is mostly a T-Mobile effort and they are it's largest enforcer. I have a T-Mobile number and a VoIP number.

I used to have SMS to my VoIP be forwarded to my T-Mobile - until T-Mobile began dropping 100% of those messages.

I have a dual SIM phone and SMS are now forwarded to my AT&T number. For now, they're arriving. If that stops, I'll have them forwarded to my Google Voice number.

I don't know if AT&T or Verizon currently utilize TCR filtering. They may, somewhat. If not, I'd guess they will but won't fully adopt T-Mobile's model.

It should be noted that VoIP providers are a primary competitor to T-Mobile; I am not at all surprised T-Mobile would single them out. It fits with T-Mobile's other anti-competitive practices - like blocking Google voice calls from handsets (ex:mine).


👤 solardev
Can you use a software solution like Pushbullet? https://www.pushbullet.com/

You install it on a real Android phone and then it's supposed to let you send and receive SMS from another device, acting as a proxy of sorts.

Personally, I use messages.google.com to answer texts from my computer, but I think you can only pair it to one device at a time. Maybe host that alongside an Android phone at home, and then stream that window to other browsers...? Super janky, I know.

Or you might be able to reverse engineer their UI or API calls and use something like Playwright to control the web interface and write your own external-facing API for it... what a lot of work, though


👤 basch
simplelogin for sms is definitely a space lacking in the consumer product market.

family home management and communication routing in general is a blank space with almost nothing. it extends into every market. childrens medical bills only appearing in one of two parents accounts etc. communication from an entity to a family is ripe for disruption and standardization.

have you looked at business support tools such as https://missiveapp.com/blog/what-is-sms-shared-inbox


👤 YZF
I'm also on VoIP (in Canada though) and didn't even realize you could get SMS to VoIP. Annoyingly many 2FAs use SMS (which isn't really that secure) and don't offer any other options. Banks, credit cards, etc. Another problem is travel where you can get your credit card declined and can't get the SMS. Over-aggressive anti-fraud AIs.

curious where you and your wife stand on tabs vs. spaces


👤 ruthmarx
Get an old $50 android on ebay, signup for ultra mobile which is like $2 month for 100 texts and 100mb of data, and then via software have it relay the message both your self and your wifes Android phone.

You can leave the cheap phone plugged in at home all the time and both of you will get any texts that come to the phone. You could set it up to reply to your phone and have it forwarded also.


👤 Sytten
Personally been using anveo.com with a small GCP cloud run [1] I made to forward SMS to my email. It is the only provider I found that is allowed for 2FA most of the time. I think it is because its numbers are not in the VoIP range.

[1] https://github.com/Sytten/AnveoSMS


👤 robhlt
You could use a call/SMS forwarding app on an old android phone. I haven't used any myself, but I know they're popular with small businesses.

Basically just get an old android phone, put a prepaid SIM in it, and leave it charging at home somewhere. The app will forward calls/texts to any other number(s) you choose.


👤 hluska
This is likely phone provider dependent and might be a real pain in the butt, but what if you shared the “home” line between your two mobile devices?

iPhone has supported dual sim since 13 or sim + eSIM for a very long time. I have absolutely no idea about Android.

It doesn’t fix spam but I’m not convinced humans will ever win that war.


👤 c22

👤 dzdt
What is TCR?

👤 systemz
Dumbphone and number from standard cell provider seems like a simple fix. No iOS or Android necessary.