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Check If Email Exists

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Re: Check If Email Exists

#251

Just curious has anyone ever turned signups around and asked for the person to send an email instead? Something like send an email to signup@someservice.com Then send a follow up confirmation email, no captcha required.

I’ve been doing it recently for some of my clients

It depends really on how valuable your service is and how easy you can make it for them to send you an email , for example auto filling subject and body using the mailto query parameters , so that they just need to click the send button on their email app helps a lot.

It does reduce spam on contact forms , that’s for sure, but I don’t yet have enough data to say whether it hampers signups in a bad way.

My clients are pretty happy with this method tho , as it works fine for their domain and who they target on their landing pages.

Personally I kinda like this method of signup , at the same time I find it annoying for when I’m not signed into the email I want to use on the particular device I’m using , while I could still send the email from another device , it does remove the ease of having it auto filled for me.

But everything has pros and cons, And I kinda like the new upside down way at-least when I build them for the services I work on.

Also it has a few issues : While I’ve practically never faced this issue in real life yet , but I can think of someone trying it.

Is if they fake the MAILFROM header , I’ve got a few emails personally where they faked the mailfrom and mailto headers , unless you verify them with dkim they can still spam you , but it’s very rare and I haven’t seen any abuse of this method as of yet , however if more people start using it , I can see it happen.

Re: Check If Email Exists

#252

Earlier quoted context omitted.

> This is clearly trying to solve a non-technical problem with technical means. Isn't that the whole point of what most of us are doing?

Is it? In my dayjob I'm solving technical problems with technical means. World hunger is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight. Climate change is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight. And so on, and so forth. Technical means can help solving certain compo…

Climate change is technical problem. Carbon sequestering coal plants can remove all carbon from the atmosphere. World hunger is undoubtedly not a technical problem though.

Re: Check If Email Exists

#253

Earlier quoted context omitted.

I'd hope you'd at least be able to explain the situation to your account manager and get an exception(maybe for that single companies domain?), but I've never used AWS so I wouldn't know if thats possible.

account manager? you fancy.

TAMs you get with the higher support plans can be of some help in situations like these.

Re: Check If Email Exists

#254

Earlier quoted context omitted.

> This is clearly trying to solve a non-technical problem with technical means. Isn't that the whole point of what most of us are doing?

Is it? In my dayjob I'm solving technical problems with technical means. World hunger is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight. Climate change is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight. And so on, and so forth. Technical means can help solving certain compo…

World hunger is rapidly being solved by exactly technical means. So is climate change. How do you think these issues are solved?

Re: Check If Email Exists

#255
post #8

Could someone spell out a use case for this? One that comes to mind would be validating that a mailing list doesn't have any outdated email addresses in it, but couldn't that be determined by just checking for a bounce when a message is sent to it? I tried to sign up for SiriusXM the other day, and though I could create an account with my .pro email address, I couldn't actually sign up for service with that same addr…

I’m tempted to add a spam detector rule that runs all From addresses through this.

Re: Check If Email Exists

#256
post #87

I use disposable emails all the time, since nowadays you can't get the "free" wi-fi from business without a freaking registration.

I use the name of the company that offers the 'free' wi-fi - eg nothanks@mcdonalds.com or chairman@walmart.com etc. That way they get the bounce back on their own mail servers and they also rarely refuse to accept it as a valid address for some reason :) (note I'm just using mcD & walmart as place-holder company names, have no idea if they operate their public wi-fi that way)

Good strategy, I'll start using it too

Re: Check If Email Exists

#257

Earlier quoted context omitted.

I’ve never worked with emails, could you not send these first emails yourself and not use SES

Have you looked into what SES or other email services provide? Sending emails is easy, while actually getting them delivered is harder. You have to make sure you're not getting flagged as spam, can handle bouncebacks, etc. Here's one discussion: https://stackoverflow.com/questions/371/how-do-you-make-sure...

Ah I understand that part but if it’s going to a big client who knows the emails are coming is it besides the point? I understand day to day

Re: Check If Email Exists

#258

Earlier quoted context omitted.

You seem to be assuming “a lot of fake user signups” == “few real user signups.” OP only said the first. For all we know they also get plenty of real ones.

Weird. Same exact 5-word opening I was typing. I didn't see your post until I posted mine.

Great minds think alike? Heh

Re: Check If Email Exists

#259

Earlier quoted context omitted.

Is it? In my dayjob I'm solving technical problems with technical means. World hunger is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight. Climate change is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight. And so on, and so forth. Technical means can help solving certain compo…

World hunger is rapidly being solved by exactly technical means. So is climate change. How do you think these issues are solved?

World hunger is caused by power imbalances. That's a social/political problem. Whatever technical solution you provide helps worsening the root cause and at best keeps the status quo.

We have observed dramatic technical advances in all fields related to food production in the last 3 decades. We've seen at best marginal improvements in world hunger in the same time, and even that only if you're beeing optimistic with your statistics.

Re: Check If Email Exists

#260
post #8

Could someone spell out a use case for this? One that comes to mind would be validating that a mailing list doesn't have any outdated email addresses in it, but couldn't that be determined by just checking for a bounce when a message is sent to it? I tried to sign up for SiriusXM the other day, and though I could create an account with my .pro email address, I couldn't actually sign up for service with that same addr…

It has honeypot detection. It's built for spamming people. There's literally zero reason to avoid honeypots otherwise
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