I need to register at, for example, oracle.com and docker.com to download some (free) stuff, etc.

• These accounts would be used only for the job I do at my company.


• My company doesn't have any commercial relation to these other companies.


• My company doesn't require me to use these websites, I just want to register at them because some specific task asks for it, or just because I want to.


• Like most companies, they do not allow us to use the company's e-mail account for personal related stuff.


• Although this is not a requirement, my workmates suggested I should avoid accessing personal mailboxes in the workstation.


• If registering at these websites, there's a chance of receiving mail marketing even doing my best to opt them out at registering.

Should I use @company.com or @gmail.com?

You're not accessing the sites for personal reasons, you're accessing the sites to perform a work activity - ergo, use your work email address.

Furthermore, some companies require verification of an account before activating it, which is usually done via a link sent to you in an email. If you specify your personal address, you have to access that in order to click the link and this is usually prevented or not allowed in a corporate setting.

As suggested by the others, I would use a work-related mail.

However, I would suggest thinking ahead and don't use your personal work mail but one which is tied to your team or is set up especially for using to register at work-related websites. Something like developerteam@compayname.com.

This has the advantage that, if you leave the company its easy for someone to pick and use your accounts without the risk of exposing your emails.

If its work related, use your work email address.

As stated, you have work tasks that require you to access information on these websites. I cant imagine a company viewing this as personal.

I've faced this issue before and in my opinion it would be ok (or even best) to use your personal email for this.

Multiple reasons for this:

• You might need these tools, info, ... for personal use or for other
  projects where you might not have access to you work email.


• You avoid any spam reaching your professional email.


• You prevent the companies offering these tools from gathering data
  on/about your company, which may push them to reach out to it etc.


• As there is no requirement from your company to use these, there
  is also none for you to connect your professional mail to them.

Of course if you're not allowed to access any personal email or such then the above would not really matter

As a general rule, don't co-mingle work and personal accounts

Use work accounts for work and setup separate personal accounts for personal use. Many many things can go wrong if you use personal accounts for work:

1. 
   It can lead to "whose account is it?" disputes: you own the account but the company relies on it and it may contain company data; whose is it now? Everyone's and no-one's. If you leave the company it's possible that the company (their lawyers) may demand that you provide them access to your account (I've read about this more than once on Stack Exchange). Are you okay with that? It's best to avoid this awkward and potentially legally complicated situation if you can.


2. 
   It can lead to data spills: are you prepared to lose years worth of personal emails because a service unexpectedly leaked proprietary company data to your personal email account (e.g. an automated Jira email contains a comment with legally-protected proprietary information)? What if a spill violates privacy or other laws (note: if you in any way work in healthcare or with the government or a government contractor this is especially important).


3. 
   It can lead to complicated hand-offs: are you going to give your personal password to the company when you leave the project or company? Probably not, so they will have some work to do if/when you leave, and in the meantime it will cause unnecessary hard feelings.


4. 
   It can put the company at risk if your account is hacked: suppose your personal account is hacked and used to try to exfiltrate company data (more common than you think), insert malware on the company network, or otherwise gain unauthorized access. Now it's "your fault" because it's your personal account. Not a fun situation to be in, and on top of it you may find yourself with a leak of confidential data into your personal account that has to be cleaned up (and possibly by your company, meaning turning over your credentials). There could be legal repercussions for the company and for yourself if the spill violates any laws.

In summary, just don't do it.

It all depends.

For something like StackOverflow I use my personal account as that is something that follows me from job to job.

If I'm registering something particular to my current position I used my work email.