At Exclaimer, we see a lot of email signatures. We see what a lot of companies get right and what they get wrong.
DO find the right ratio
Images should not overwhelm the text and the email needs to be easily identifiable in the signature. However, what looks right with blocks of text will look strange under a single sentence. It’s about finding the right balance.
The first email in a conversation may be longer, so a larger, bolder signature can make a professional first impression. Then, on replies, use a simpler, slimmer set-up as a reminder.