If AI translation services had been more available 8 years ago an answer may have been available sooner. Here's what Google AI says the letter is about.

In Amsterdam, 4 October 1664
Honorable, wise Sir Sallütt,
Your Honor's welcome correspondence from Madeira, enclosed from the 12th of May, together with the shipment of preserves (Confecturen) on the 8th of August, has been received by us.
According to the enclosed list dated the same day in August, the shipment arrived in good order. It was forwarded via skipper Jean Germain, together with an assortment of flour (meel) from Melchior Spijcker, which arrived here on the 27th of July from St. Christoffel (Saint Kitts).
Furthermore, everything is proceeding well here. Regarding news of the current state of affairs, we have also enclosed a newspaper (Tijdinge) herewith.
Concluding with greetings from your father, the honorable Mr. Melchior, who is currently doing well. We wish you some pleasant days ahead. May God keep you in His holy protection.
Your Honor's devoted friend,
Evert Pommert
Quote:
Old Dutch Transcription
In Amsterdam 4: octob 1664:
Eersame discrete Hr. Sallütt v: l: aengenamewt Madera in sinckel van 12 Maij neffens hetpartij met Comforture op 8 Aug: ontf... en soovolgens onder Citto op genoemde 8 Aug: het partijop hamb: versonden met schipper: Jan herman tessenaen Hr Melcher Spijcker v: l: aeng: van27 Julij uit St: Christoffel Meede ont en v: louer gesondene Advijsen Sijn voortganck gegevenwaer van oock Jugeslooten Een advijes weeromsende van v: l vader Hr Wilhelm teschemakerkan ick van voordens Eenige aeng: dijensten doengelijeff tegebijeden gott bevallig in haest
v: l: vijenner
Evert Pommert
Key Palaeographical Details
Abbreviations: The symbol v: l: stands for uwer liefde or uwer loflijke, standard respectful placeholders used in early modern Dutch correspondence.
Orthography: Letters like wt are the historical equivalent of uit (out/from). Double vowels such as ee and ij are characteristic 17th-century conventions for lengthening vocal sounds.
The letter concludes with a formal closing and the signature of Evert P... (the surname is partially obscured but looks like Pommert or Ponnert).