James

SetRetryMaxWaitTime with negative number + RetryAfter callback doesn't work reliably (due to 32bit/64bit integer conflict)

3

`(*Client) SetRetryMaxWaitTime(time.Duration(-1))` should work, as shown in `retry_test.go`. However, it seems to fail due to 32bit max integer value when used in collaboration with `(*Client) SetRetryAfter` due to the implementation...

RFC2047 encoded-words as content-transfer-encoding value

6

There exist messages in the wild (notably, some originating from mailbox.org's automated mailer e.g. due to payments) in which the `content-transfer-encoding` presents as an RFC2047 encoded-word. For instance, here is...

We execute the undo for all successful chunks, but as a single chunk might be partially successful, we should undo that too.