How do you grab the attention of your customers and improve the chances of them doing your customer feedback survey? What do you say to them in an email, SMS or post transaction screen?
In your invite, pay careful attention to each word you write and eliminate everything that isn’t necessary. One of the golden rules is not to repeat yourself or communicate things that aren’t relevant or interesting to the customer?
Survey Email Invitation
Definition: A survey email invitation is an email sent to customers, employees, or other stakeholders asking them to complete a feedback survey. It includes the purpose of the survey, a time estimate, and a link or CTA to begin. The invitation is distinct from the survey itself, its sole job is to motivate the recipient to click through and respond.
Common survey email types: NPS survey invitation, CSAT survey invitation, post-purchase feedback email, relationship survey email, transactional survey email.
Quick Answer: What to Say in a Survey Email Invitation
A strong survey email invitation should include five things:
- A personalized greeting using the recipient's name (never 'Dear Valued Client')
- A clear, one-sentence explanation of why you're asking and what you'll do with the feedback
- A specific time estimate: '2 minutes,' not 'just a moment'
- A single, prominent survey link or CTA button (text link, not image-only)
- A brief, genuine thank you
Keep the total copy to 3 to 5 sentences. The goal of the invitation is to earn the click, not explain the survey. For NPS survey invitations specifically, lead with the brevity of the survey, since NPS is one question by design.
Comparison Table — Elements of an Effective Survey Email
Element | What to Include | B2B NPS Best Practice |
Subject line | Clear purpose, personalized if possible, under 50 characters | Reference the account or recent interaction |
Opening | Address recipient by name, never 'Dear Valued Client' | Use contact name, not account name alone |
Purpose | One sentence: why you're asking and what you'll do with feedback | Emphasize that feedback is acted on individually, not just aggregated |
Time estimate | Specific (e.g. '2 minutes'), never vague ('just a moment') | NPS surveys are short by design — lead with this |
Survey link / CTA | Clear, prominent, text link or button | Avoid image-only CTAs (blocked by many email clients) |
Closing | Thank the recipient for their time | Keep it brief and genuine |
Email subject lines
There are psychological triggers to get the attention of customers.
For instant “knee jerk” decisions such as opening an email, connecting with people emotionally is far more effective than trying to be informative and appeal to their rationale. This means targeting people’s empathy, the desire to influence, and intellect. Example: “You have the power to make a better experience.”
Questions are an easy way to peak your customers curiosity. Targeting the same impulse as above, questions feel personal and convey a sense of worth/importance. Example: “What do you think we should do next?”
Most of all, your subject line should be brief, straightforward and friendly.
To learn more read our article “6 email subject lines strategies to increase your survey feedback.”
Survey Email Types
- NPS survey invitation: Best for measuring overall account or customer relationship health. Lead with brevity, one question, under 2 minutes.
- Transactional survey invitation: Best for capturing feedback immediately after a specific interaction. Send within 24 hours while the experience is fresh.
- Relationship survey invitation: Best for scheduled, periodic feedback from key accounts. Timing is less critical, personalization is more important.
- Pre-invite email: Best for high-value accounts where response rate matters most. Sends a heads-up 1 to 2 days before the survey, improving open and completion rates.
- Reminder email: Best sent 3 to 7 days after the initial invite. For transactional surveys sent via the transaction channel itself, a reminder may not be worth sending.
An effective invite
Whatever channel you use to invite customers, there will always be a body of text. To create an invite that gets the highest possible click-rates, follow these rules:
1) Personalize the text with their name and maybe relevant transaction information. If you are sending the invite by email, there is no excuse for not doing this. For other channels, this can be tricky, but you should always try.
2) Get straight to it and tell them what the email is about, why are you emailing them? Begin with something like:
“At CustomerGauge, we are constantly trying to improve our service and would like to hear your feedback on how we performed.”
3) You know that one of the strengths of NPS is how quick the surveys are. Make sure the customer knows this too.
“The survey is short and will only take 2 minutes to complete.”
4) Customers often think: “why respond, my issue will just end up as data on a spreadsheet rather than being fixed.” Convince them that this is not the case and let them know that you analyze feedback at an individual level.
“We promise to read every customer comment!”
5) A well-designed button for a survey link isn’t as good an idea as you may think. If recipients’ email servers block images for security reasons or customers choose not to download images, then your button and survey link will be lost.
It is more important that the link to your survey be viewable by all. Use a nice hyperlinked phrase or set of words, and whatever format you use, make sure it is easy to find. Customers shouldn’t have to scroll down to find it.
6) The invitation should be aesthetically pleasing, designed as well as the survey itself. Plain HTML won’t do much to capture the customer’s interest. Choose a nice font (classics that always work are Helvetica, Gothic or Arial), think about the alignment and layout of the text and consider adding a banner image to help remove the boredom of white backgrounds.
7) And of course, thank the customer for their time!
Send reminders
Sending survey invite reminders is a good way to improve your response rate. As many customers, particularly by email, may not see or be able to respond to your survey the first time around.
A standard waiting time for CustomerGauge clients is 3 - 7 days. You don’t want to remind the customer too soon after the first request, but if it is a transactional survey you are conducting you don’t want to wait too long either.
Survey reminders become tricky when you send transactional survey invites through the transaction channel itself, such as the final screen of an online purchase. As a reminder will require a different channel, such as email. In these cases, it may be better not to send a reminder, as it will probably have little effect and only confuse customers.
How to avoid email spam filters
Various things may trigger spam filters. Avoid these common red flags in your invitation email:
- ALL-CAPS SUBJECT LINES.
- Overuse of exclamation marks in the subject line!!!!!!!
- Trigger words in the subject line or body of text, like 'free', 'urgent matter', 'act now' or 'last chance'.
- An email with one big image and little to no text.
- Lots of different fonts, font sizes, and text colors.
- Lazy HTML, which usually occurs by converting a Word file to HTML.
- Inactive sending lists. Lists that have not engaged in campaigns through opens or clicks will be noticed by ISPs and could block the domain and IP address delivering the campaigns.
Pay attention also to local sending legislation. Some general rules that many countries enforce are:
- Using false or misleading header information. All you contact information such as domain name and email address, must be accurate and identify the person or business who initiated the message.
- Deceptive subject lines that don’t reflect the content of the message.
- It’s good to inform recipients where you’re located, include a valid postal address to create authenticity.
- Allow recipients to opt out of receiving future emails with clear and easy instructions on how to do so.
- And honor opt-out requests promptly.
Don’t just take our word for it. Test it!
The advice outlined above are best-practice ideas that we at CustomerGauge have gathered over the years, but nothing in life is uniform, and the same goes for what sparks your customers’ interest.
So, don’t just create a single survey invite and leave it at that. Do some A/B testing by experimenting with the subject line, the central message or maybe the visual layout of the invite to see if you can boost that click-through-rate.
Mastering the survey invite is just one part of our in-depth ebook, which covers all you need to know about creating easy and fast customer feedback surveys. Download it below!
Ready to Send NPS Survey Invitations That Actually Get Responses?
CustomerGauge helps B2B teams send personalized NPS invitations at scale, track response rates by account, and automatically route follow-ups to the right team members. The result: more feedback, faster closed loops, and a clearer picture of account health across your entire book of business.
Survey Email Invitations: Frequently Asked Questions
What should I say in a survey email invitation?
A strong survey email invitation includes five elements: a personalized greeting using the recipient's name, a clear one-sentence explanation of why you're asking, a specific time estimate (e.g. '2 minutes'), a prominent link or button to the survey, and a brief thank you. Keep the total word count low. The goal is to get the click, not explain the entire survey in the email.
What is a good subject line for a survey email?
The best survey email subject lines are short (under 50 characters), specific, and emotionally resonant rather than purely informational. Examples: 'Quick question about your recent experience' or 'We want to hear from you, [First Name].' Avoid ALL CAPS, excessive punctuation, and trigger words like 'free' or 'urgent.'
How long should a survey invitation email be?
As short as possible. A survey invitation email should be no more than 3 to 5 sentences: greeting, purpose, time estimate, CTA, and thank you. Every word that isn't necessary reduces response rates. The survey itself does the work, the invitation just needs to earn the click.
When should I send a survey invitation email?
For transactional surveys, send within 24 hours of the interaction while the experience is fresh. For relationship NPS surveys, timing is less critical, but mid-week sends typically outperform Monday and Friday. If a reminder is needed, CustomerGauge recommends waiting 3 to 7 days after the initial invite.
How do I improve survey email response rates?
The highest-impact improvements are personalization (using the recipient's name and referencing the specific interaction), a specific time estimate, and a clear single CTA. A/B testing subject lines is the most reliable way to find what works for your audience. Pre-invite emails, sent a day or two in advance, can also meaningfully improve open and response rates.
What words should I avoid in a survey invitation email?
Avoid words that trigger spam filters or create a pushy tone: 'free,' 'urgent,' 'act now,' 'last chance,' and excessive exclamation marks. Also avoid vague language like 'just a moment' for time estimates, and never open with 'Dear Valued Client,' which signals a generic, untargeted message.
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