Same here for my Epson Scanner it's 20 characters

This is a very common problem. Mainly PRINTERS does not support the longer SMTP credentials. I think it might be possible using an API but you should make it possible to create shorter SMTP credentials via GUI,

Allow shorter password options for SMTP credentials. I reset the password and now it's worthless. My Canon printer only allows a 32 character password.

For those who are still looking for an answer, here is what I did:

curl -s -i \
--user 'api:???' \
-X PUT \
https://api.eu.mailgun.net/v3/domains/{your_domain}/credentials/{your_login} \
-F password="{the_new_password}" \

we have devices that have max 30 and some have been max 8 so being able to adjust is KEY!

Allow for shorter passwords for SMTP credentials. A lot of services/devices trying to send using SMTP don't accept 50 character passwords.

Even if we are not able to edit SMTP credentials at least allow it to generate shorter passwords

There is a workaround until Mailgun implements a permanent feature to adjust the password length.

You can update the password using the API and choose a shorter password (down to 5 characters long).

I need to have the ability to create custom passwords or passwords it to 32 characters the default passwords are too long for some systems that will not except longer than 32 characters

Has this problem been fixed? The system I'm configuring allows passwords no bigger then 30 chars. This is very annoying. I will try another service provider

Allow for shorter SMTP credential passwords. Many services (such as scanning to email) only allow for limited password character length, rendering Mailgun obsolete in those cases.

Your API Keys are too long to fit on my embedded device. I am unable to use Mailgun for that reason. Can we please reduce the password length for SMTP?

Same issue and looking for a workaround or another service if that is not possible.

I have just run into this as well. My printer is unable to send emails ..... Very Very annoying

I'm using up to date Canon software that allows 64 characters for email and 32 for password.

I agree, I've used Mailgun for many years and have loved it. I recently created a new account and half the systems I've used it for in the past just don't work. There should be the ability to choose the password length or even create your own passwords for SMTP credentials.

Running into the same problem here unfortunately. It would be great to be able to do shorter passwords.

Same problem as others; I often seek to use Mailgun for transaction SMTP emails from printers, scanners, and similar appliance services. Very few of them correctly support very long passwords.

I also ran into this, but fortunately my application was presenting the full error message from SQL so I was able to locate where it stored the SMTP password and manually expand that field to make it fit.

Not everyone will be so capable or inclined to make a similar change, and they should allow a couple pre-set lengths (a 20, a 50, etc).

My greater concern is that they are only using hex values 0-9 and a-f, so in reality that 50 character password has the functionality of a 32 character password (0-9 A-Z and a-z)

Our older Sharp copiers only allow for a max of 32 characters and the passwords that are generated are longer than 32 characters. This puts us at a standstill with some customers that aren't able to use other authentication methods when scanning through SMTP. Please give us an option to shorten the length; 32 characters is still quite a secure password.