Our Mascot

Gugu the Postman Pigeon

Gugu is the cute and dedicated postman pigeon mascot of our email testing service. From the moment you send an email until it reaches the inbox, Gugu inspects every stop along the way—carefully auditing SPF, DKIM, DMARC, and blocklists.

Profile

Species: Postman Pigeon (Columba livia)
Title: Sr. Postman
Hours: 8 to 5
Expertise: My emails aren’t working
Favourite command: Gugu!
Dislikes: spam folders and “undeliverable”

Test your email with Gugu

Gugu smiling and waving with his right wing

Gugu's 9 Work Poses

Gugu has a unique pose and expression for every screen and state across the site, from score ranges to error moments:

Home pageLanding screen

Welcome Wave

Cheerfully greeting visitors with his right wing, ready to spin up a fresh one-time test inbox.

Waiting screenAwaiting mail

Gugu waiting curiously with a wing on his chin

Curious Waiting

Wing resting on his chin, eyes on his satchel. Ready to leap into action the instant your email arrives.

AnalyzingIn progress

Gugu flying with wings spread and an envelope in his beak

Delivery Flight

Soaring with an envelope held in his beak, swiftly running SPF, DKIM, DMARC, and DNSBL checks.

Mail receivedDelivered

Gugu holding an envelope tightly with both wings

Mail Arrived!

Clutching the envelope tightly with both wings, eyes sparkling with delight over a safe arrival.

ExcellentScore 9 – 10

Gugu jumping happily with wings in the air and sparkles

Flawless Flight

Jumping with joy amidst radiant sparkles! Your email passed all authentication tests with top marks.

AcceptableScore 6 – 8.9

Gugu with a wing on his head looking slightly puzzled

Minor Bumps

Wing touching his head with a cautious smile. Your email goes through, but a couple of records could use fine-tuning.

Needs workScore 0 – 5.9

Gugu looking sad with ruffled feathers and a little raincloud above

Stormy Weather

Ruffled feathers, tilted cap, and a little raincloud above. High risk of landing in spam due to missing records or blocklists.

ErrorAddress not found

Gugu showing his empty satchel with a puzzled expression

Lost Envelope

Tilted head, displaying his empty messenger bag. The address wasn't found or an unexpected error occurred.

Asleep404 & Expired

Gugu sleeping peacefully with his cap pulled over his beak

Nap Time

Cap pulled over his beak for a cozy nap. The 24-hour test window expired or this page no longer exists.

Character Sheet Angles

The 4 core reference views created during the Codex character design:

0° Frontal

Front View

Plump chibi body, mustard yellow postman cap with an envelope badge, and warm smiling eyes.

45° Three-Quarter

Three-Quarter View

The signature angle revealing character depth, curved proportions, and friendly silhouette.

90° Profile

Side View

Showcasing the brick-red satchel strap, round little tail, and cute pink feet.

180° Rear

Back View

Slate blue-gray back feathers, darker folded wings, and rear contour of the postman cap.

Character Anatomy & Colors

Designed following the pingu.tr soft matte clay/vinyl 3D style—smooth non-glossy finish, gentle studio lighting from upper-left, and chunky friendly shapes:

Body & Back#8FA3B8Slate blue-gray matte clay finish

Wings#5E7288Darker slate blue-gray tone

Chest & Belly#C9D3DELight pastel gray-blue contrast

Neck Patch#5FB3A6Subtle teal-to-lilac iridescent gradient

Postman Cap#E3A92BMustard yellow with tiny envelope badge

Messenger Satchel#B5472FCream bag with brick-red shoulder strap

Beak & Feet#F08A6BWarm coral beak and rose pink feet