Buddhapi is correct on both points.
However, you should be aware that rules vary from state to state and province to province as to what might be considered to be a successful delivery of legal papers (service).
Generally speaking:
Personal delivery by a "process server" is the gold standard for delivery.
Be aware that it needn't be passed from the server's hand to your hand.
For example, imagine that you were approached in public by a server and he/she asked if you were "John Doe".
You might respond in the affirmative, at which point he/she would hand an envelope to you.
But, even if you did not take the envelope, he/she could simply drop it at your feet, and say "you've been served".
It's sometimes difficult to duck service to a workplace.
If a server can find out where you work, he/she may approach someone in charge, and ask if you work there.
He/she may then give the document to that person to give to you.
In some places, regular mail is an acceptable form of service if the document isn't sent back "return to sender" within a handful of days.
Email is a really crappy way of sending legal documents.
If you receive documents by email (or even Facebook), and you respond at all, an argument may be made that you've read the documents in question.
Some will just shove the envelope in your door, or mailbox.
This can work if they can prove that you do in fact reside there, or if you respond.
In some states, the rules are fairly strict as to what constitutes service.
In some Canadian provinces, all that needs to be proven is that the person read the documents, and/or was aware that they were being sued.
Protip: watch the online court docket for your state and province.
If you've been sued, it'll appear on there. Expect delivery within the next business day to three weeks.
Evading a lawsuit can actually work, in spite of the impression that process servers prefer to give, which is "you can't hide, and we'll get you every time".
While resources are certainly available to track people down, it's actually very, very expensive to do so.
But, it can be quite stressful, as you'll feel that you're always looking over your shoulder.
Having said all that, lawsuits are very rare, especially in the case of Getty and relatively minor infringements.
Most folks here don't recommend ignoring these issues, and letting things snowball into bigger problems.
A final thought. Even if you can't work things out at first, it's never too late to negotiate a settlement even if a lawsuit has been filed.
Nobody (even the trolls) want to risk going to court.
S.G.