Differences between [TEST] email and final sendout in iPad mail client

Differences between [TEST] email and final sendout in iPad mail client

Hi,

We've noticed some annoying differences between the test email (which automatically includes [TEST] tag into subject) and the final sending (which have been sending to full subscriber list).

Platform: Apple Ipad Mail Client with IOS 9.3 beta 3
Campaign details: Custom HTML with 740px width.

We imported our custom made HTML newsletter. Everything seems to be ok in preview window and in test e-mail (see attached test email.png), but when we sent the e-mail campaign finally, we've noticed that the e-mail's footer is not correct, font sizes are bigger than it was in the test e-mail (see attached normal email.png).

Could you check and fix this bug or explain to us, if we made any mistake?

Thanks!

Best regards,
George