Deliverability
A signature should never cost you an inbox.
Spam filters score every part of an email, including the bit at the bottom. Outromail's signatures are built to score well: light, few links, hosted images, no pixels.
What filters look at
Five signals in a signature
Tracking pixels
A 1×1 image from a tracking domain is one of the strongest spam signals. Outromail never adds one.
Link count and domains
Many links, or links to shorteners and unknown domains, look like a campaign. We keep links few and on your domains.
Image hosting
Images from a domain with bad reputation or without HTTPS get blocked. Ours are served over HTTPS from an EU CDN with long cache headers.
HTML weight
Bloated HTML from Word or a design tool trips filters and Gmail clipping. A Outromail signature is about 5 KB.
Text-to-image ratio
A signature that is one big image looks like spam and is unreadable to screen readers. Ours is real text with small images.
Consistency
A company whose signatures all look alike builds a sender reputation faster than one with fifty variations.
What we do
Built light on purpose
Tables and inline CSS
The oldest, most compatible HTML there is. No scripts, no external stylesheets, no fonts to load.
Plain-text fallback
The copy button includes a text version, so clients that show plain text still show who you are.
Your domain, optionally
Team plans can serve images from a subdomain of your own domain, so every URL in the signature is yours.
Questions
Deliverability questions
Can a signature get my email marked as spam?+
On its own rarely, but it adds weight: tracking pixels, many links, images from suspicious domains and heavy HTML all count against you. A clean signature removes those signals.
Why no tracking pixels?+
Pixels are a known spam signal, many clients block them, and recipients dislike them. Outromail never adds one. If you want numbers, use click counts on buttons.
How many links are safe?+
Keep it under about eight. Outromail's templates have a logo link, a website, a few icons and one button.
Does image hosting matter?+
Yes. Images on a reputable domain with proper headers load reliably and do not trigger filters. Images embedded as attachments or base64 make the email heavy and suspicious.
What about Gmail clipping?+
Gmail clips messages over 102 KB. A Outromail signature is around 5 KB, so there is plenty of room for the message itself.
Make the last line of every email count.
7 days of everything, free. No credit card.