I send emails with delay using mu4e-send-delay. The repo seems out of date with the last commit 2 years ago.
I often find that emails I sent with delay are sent twice, for example a pair sent within 1 minute of each other:
Date: Mon 29 Apr 16:05:09 2019 Date: Mon 29 Apr 16:04:17 2019
an another pair within 1 second of each other:
Date: Tue 30 Apr 12:51:22 2019 Date: Tue 30 Apr 12:51:21 2019
And some pairs have exactly the same timestamp.
Nevertheless, some recipients I contacted only receive one of them.
In addition, attachments show differently, for example one email in the pair has:
Date: Mon 29 Apr 11:56:01 2019 Maildir: /Sent Items [...body of email...] <#part type="application/pdf" filename="/var/folders/zx/j_gjm0ld081b_mcqmg3gp9l1zp59y6/T//mu-2137171910/9ca95bbc/3/SS Programme 2019.pdf" disposition=attachment> <#/part>
and another in the pair has:
Date: Mon 29 Apr 11:55:41 2019 Maildir: /Sent Items Attachments: SS Programme 2019.pdf(1.1M) [...body of email...]
How can I fix this?