jedesmal
every time
On each individual occasion; again and again, without exception. The officially correct spelling is 'jedes Mal' (every time).
Jedesmal, wenn ich anrufe, ist die Leitung besetzt.
Every time I call, the line is busy.

every time
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every time
On each individual occasion; again and again, without exception. The officially correct spelling is 'jedes Mal' (every time).
Jedesmal, wenn ich anrufe, ist die Leitung besetzt.
Every time I call, the line is busy.

The officially correct and recommended spelling is separate: 'jedes Mal' (every time). It is treated like a noun phrase, consisting of the pronoun 'jedes' and the noun 'Mal'.
Wir haben jedes Mal das gleiche Problem.
We have the same problem every time.
'Jedes Mal' (every time) is very often used to introduce a subordinate clause with 'wenn' (when/if). In this subordinate clause, the conjugated verb comes at the end.
Jedes Mal, wenn das Telefon klingelt, erschrecke ich.
Every time the phone rings, I get startled.
As an adverb, 'jedes Mal' (every time) can appear in different positions in the sentence. If it is in position 1, the verb follows directly (inversion).
Er vergisst jedes Mal seinen Regenschirm.
He forgets his umbrella every time.
always
'immer' and 'jedesmal' can both express that something happens without exception. 'immer' is more general and can describe an ongoing habit or state. 'jedesmal' means more specifically: on each individual occasion. The correct spelling today is 'jedes Mal'. Learners may confuse the words because both often have to do with repetition. If you want to say generally that something is always the case, 'immer' fits better. If you are focusing on individual situations, 'jedes Mal' sounds more natural.

Im Bus wird sie jedes Mal müde.
She gets tired every time on the bus.
Meine Schwester trinkt morgens immer einen Kaffee.
My sister always drinks a coffee in the morning.