When reading a very long e-mail I come the to point (on the bottom) where mailspring tells me that the e-mail was clipped. I can click on the message to open the full e-mail and have to go through the whole e-mail again (text I already saw) to come to the point where the e-mail was clipped. Thats costs time and is annoying.
Do not clip e-mails. Mailspring is the only client I know that clips e-mails
Print the message that the e-mail was clipped not on the bottom of the e-mail but on top of the e-mail so one can open the full e-mail directly.