Is there a batch Get messages? from the golang client library?
I dont see it https://godoc.org/google.golang.org/api/gmail/v1
i can get a list of message ids, but have to get the message per Id, one at a time.
1 Answers
Answer
There is a Github issue on the Go client's repo regarding this topic, and apparently it is not likely to see support for this feature anytime soon. It may, however, be implemented in the next generation of the client.
Possible workaround
You can implement yourself the batching feature, by making HTTP calls to the www.googleapis.com/batch or www.googleapis.com/batch/api/version endpoints. The former is due to be deprecated in August 12, 2020 but you can still use the latter past this date for homogeneous requests (in your case, doing GET requests based on messageId, you should have no problem doing so). You can read more about this in the following Official Google Developers Blog post: https://developers.googleblog.com/2018/03/discontinuing-support-for-json-rpc-and.html
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