I will add that if you have a lot of incoming transactions it may be a good idea to consolidate all of those by sending your bitcoin to a different address you control that way the size of the transaction will be lower and with it the costs, also if you are using electrum do not use change addresses since that only makes future transactions bigger and more costly.
This will allow you to create one final transaction that you then have sent to yourself from time to time, just to get your funds off the wallet service under your full control, which should always be the main priority afterwards.
I usually don't really recommend making use of online wallet services, but in this case it's a useful and money saving option that is definitely worthy of being considered by those interested.