Other ways to say 'take your time' / 'whenever you can' / 'no rush'? [duplicate]

Are there other ways to say Take your time?

I know:

• Whenever you can
• It's not (terribly) urgent
• No rush

Any other ideas?

Solution 1:

At your (earliest) convenience (add earliest to indicate it needs to be as soon as possible). Meaning according to Collins Dictionary:

"at a time suitable to you"1

Another turn of phrase is (see this question and its comments for information about the use of this phrase):

At a time of your choosing

Attribution

1 "Definition of 'at Your Convenience'." At Your Convenience Definition and Meaning | Collins English Dictionary. Accessed March 25, 2018. https://www.collinsdictionary.com/dictionary/english/at-your-convenience.

Solution 2:

Here is a letter: read it at your leisure.

From A New and Complete Concordance Or Verbal Index to Words, Phrases, & Passages ... ~ By John Bartlett

Solution 3:

At your pleasure

at someone's pleasure
phrase
As and when someone wishes.
‘the landlord could terminate the agreement at his pleasure’
Collins Living Dictionaries

Solution 4:

There is no hurry (or just no hurry) is a good colloquial expression that can also be used in a business setting:

Pay me back whenever you can. There is no hurry.