That’s a mistake, because tests have shown that varying the outer envelope can increase or depress response rates in an A/B split — even if the mailing inside is identical — by 25% to 100% or more.
Here are 9 important outer envelope factors to consider when putting together your next mailing:
- To tease or not to tease? We use outer envelope teasers because we think the strong teaser we have written will increase response. But there are times when a teaser — even one we think is strong — has the opposite effect and actually decreases response.
Some marketers argue that the purpose of the teaser is to get the recipient to open the outer envelope. But a blank envelope from a stranger gets opened every time: you want to know ...(register to read more)
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