An email signature that works for you
Photo: Avila Ops Tecnologia
An email signature working for you has five text lines: name, role, company, directly linked WhatsApp, and website. It fits mobile screens, passes spam filters, and gives customers the next step without searching. Extras, banners, slogans, six social icons, hurt more than help.
It is your company’s most-traveled piece. Every quote, reply, and confirmation carries it to people who may never have seen your website. When resuming paused conversations after holidays or vacations, signatures are business cards arriving before you.
What must a signature contain?
Our recommended template:
Nicolas Avila Customer service and operations · Avila Ops WhatsApp: +55 17 99781-1471 · https://wa.me/5517997811471 avilaops.com · [email protected] CNPJ 00.000.000/0001-00 · Address, City/SP
Replace with your details. Each line’s purpose:
| Line | Purpose |
|---|---|
| Name | Recipients know whom they are speaking to and how to address you |
| Role and company | Context: owner, salesperson, support |
| Linked WhatsApp | Customers click to open conversations without typing numbers |
| Website and email | Matching domains signal a real business |
| CNPJ and address | Identifies suppliers (Decree 7.962/2013 requires these in offer emails) and reduces distrust |
Own-domain email completes the signature: [email protected] matches avilaops.com. An own website paired with @gmail.com suggests one is not serious. See professional email definitions at avilaops.com/glossario/e-mail-profissional.
What should you remove?
- Large images. An 800-pixel logo becomes an attachment, burdens phones, and appears as a broken square in many clients. If using one, maximum width 150 pixels, hosted on your website with alt text.
- Motivational quotes or slogans. Nobody reads them, and they occupy WhatsApp space.
- Five social icons. Choose the one you use, usually Instagram for small businesses.
- Ten-line legal notices. Little practical effect in ordinary email, and they resemble bank messages.
- Colors and fonts differing from the message. Signatures are text in the same font. Bold names suffice.
- Shortened links. Spam filters distrust them. Use full addresses.
Rule: signatures longer than your average email are too large.
How do you standardize across staff and phones?
Write the template once and send it for everyone to paste into desktop and phone email settings. Apps usually have separate signatures, so full desktop versions often coexist with “Sent from my iPhone” on phones, the source of many quick replies.
Agree fixed elements (company, website, CNPJ, name color), leaving name, role, and WhatsApp individual. If you have a defined visual identity, follow website and invoice fonts and colors, as explained at avilaops.com/identidade-visual.
For WhatsApp links, use identifying links to measure email-origin conversations, the same website mechanism described at avilaops.com/integrar-site-com-whatsapp. Signatures become measured channels rather than footers alone.
What to do now
Build the signature using this template, email your own phone, and test the WhatsApp link. If business email lacks your domain, that is the first adjustment and takes one day: avilaops.com/email-profissional or contact us on WhatsApp: wa.me/5517997811471.
Frequently asked questions
Must I include the CNPJ?
For offer and sales emails, e-commerce Decree 7.962/2013 requires prominent business name, CNPJ, and supplier address. Ordinary conversations do not require it, but it proves the business exists. One line.
HTML or text signatures?
Minimally formatted text: bold name, clickable links. Heavy HTML with tables and images breaks mobile and burdens filters. Consistency supplies the look, not decoration.
Should every reply include the full signature?
Full on the first message. Later replies need only name and WhatsApp. Most clients support both versions.
Connections, made clear
Every message deserves context and continuity.
See a simple communication workflow using your business domain.
- MessageAn enquiry arrives at your business email.
- OrganisationIdentify the subject and responsible person.
- ReplyReply with the information needed to move forward.
- HistoryKeep the conversation for future reference.
- Next actionAgree on a follow-up or route the enquiry.
- Message. An enquiry arrives at your business email.
- Organisation. Identify the subject and responsible person.
- Reply. Reply with the information needed to move forward.
- History. Keep the conversation for future reference.
- Next action. Agree on a follow-up or route the enquiry.
Message
An enquiry arrives at your business email.
Turn what you learned into your next step.
Tell us about your company and what you want to improve. We can explore the right tools, integrations or custom project together.